FNUS56 KEKA 180747 FWFEKA FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA NATIONAL WEATHER SERVICE Eureka CA 1247 AM PDT Mon May 18 2026 ...GUSTY WINDS AND VERY DRY CONDITIONS WILL SUPPORT HIGH FIRE DANGER FOR EASTERN MENDOCINO, TRINITY, AND LAKE COUNTIES EARLY TODAY... .DISCUSSION...Winds will persist early today around the rim of the Sacramento Valley. Conditions will still be especially dry today. Winds will weaken by this afternoon and during the week, but conditions will remain very dry with temperatures gradually increasing near 90 by mid to late week. CAZ401-190130- Coastal Del Norte- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...63-69 Ridges/upr slopes....64-69 * Min Humidity....... Valleys/lwr slopes...53-63 percent Ridges/upr slopes....47-57 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 12 mph. Ridges/upr slopes....Northwest winds 5 to 12 mph. * Mixing Height..........2100 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...49-52 Ridges/upr slopes....around 50 * Max Humidity....... Valleys/lwr slopes...67-77 percent Ridges/upr slopes....64-74 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 12 mph. Ridges/upr slopes....North winds 5 to 12 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...64-71 Ridges/upr slopes....66-72 * Min Humidity....... Valleys/lwr slopes...52-62 percent Ridges/upr slopes....48-58 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 7 to 14 mph. Ridges/upr slopes....Northwest winds 7 to 14 mph. * Mixing Height..........2100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...51-54 Ridges/upr slopes....50-53 * Max Humidity....... Valleys/lwr slopes...74-84 percent Ridges/upr slopes....74-84 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 8 to 15 mph. Ridges/upr slopes....North winds 8 to 15 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ402-190130- Interior Del Norte Including the Smith River Valley- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...68-76 Ridges/upr slopes....60-68 * Min Humidity....... Valleys/lwr slopes...40-48 percent Ridges/upr slopes....38-46 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 12 mph. * Mixing Height..........6600 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-50 Ridges/upr slopes....43-49 * Max Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....48-58 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 to 8 mph. Ridges/upr slopes....Northeast winds 5 to 12 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...71-79 Ridges/upr slopes....65-73 * Min Humidity....... Valleys/lwr slopes...42-52 percent Ridges/upr slopes....37-47 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....Northeast winds 5 to 12 mph...shifting to the north 5 to 8 mph in the afternoon. * Mixing Height..........5000 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...50-53 Ridges/upr slopes....48-53 * Max Humidity....... Valleys/lwr slopes...62-75 percent Ridges/upr slopes....53-63 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 to 10 mph. Ridges/upr slopes....Northeast winds 5 to 11 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ403-190130- Northeastern Interior Humboldt and Southwestern Siskiyou Including Orleans- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...73-81 Ridges/upr slopes....59-67 * Min Humidity....... Valleys/lwr slopes...20-28 percent Ridges/upr slopes....29-37 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 to 6 mph...shifting to the northwest 5 to 9 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 12 mph. * Mixing Height..........8300 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-49 Ridges/upr slopes....42-46 * Max Humidity....... Valleys/lwr slopes...58-73 percent Ridges/upr slopes....53-63 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 9 mph. Ridges/upr slopes....North winds 5 to 11 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...77-85 Ridges/upr slopes....63-71 * Min Humidity....... Valleys/lwr slopes...23-31 percent Ridges/upr slopes....31-41 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 to 6 mph...shifting to the northwest in the afternoon. Ridges/upr slopes....Northeast winds 5 to 9 mph...shifting to the northwest 5 to 8 mph in the afternoon. * Mixing Height..........7100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...50-53 Ridges/upr slopes....46-51 * Max Humidity....... Valleys/lwr slopes...61-76 percent Ridges/upr slopes....53-68 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph...shifting to the northeast 5 to 6 mph after midnight. Ridges/upr slopes....Northwest winds 5 to 10 mph...shifting to the northeast 5 to 9 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ404-190130- Northern Coastal Humboldt- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...61-66 Ridges/upr slopes....around 58 * Min Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....59 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 11 mph. Ridges/upr slopes....Northwest winds 5 to 11 mph. * Mixing Height..........2100 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Mostly clear. Patchy fog early in the morning. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...43-47 Ridges/upr slopes....around 46 * Max Humidity....... Valleys/lwr slopes...84-98 percent Ridges/upr slopes....85 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 10 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....North winds 6 to 10 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Partly cloudy then becoming sunny. Patchy fog early in the morning. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...63-68 Ridges/upr slopes....around 60 * Min Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....62 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming northwest 5 to 10 mph in the afternoon. Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height..........1900 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Partly cloudy. Patchy fog after midnight. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-49 Ridges/upr slopes....around 48 * Max Humidity....... Valleys/lwr slopes...89-100 percent Ridges/upr slopes....86 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 9 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ405-190130- Northwestern Interior Humboldt Including the Bald Hills- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...66-74 Ridges/upr slopes....61-69 * Min Humidity....... Valleys/lwr slopes...44-54 percent Ridges/upr slopes....43-53 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 mph...shifting to the northwest 5 to 7 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 8 mph...shifting to the northwest 5 to 10 mph in the afternoon. * Mixing Height..........3700 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...43-49 Ridges/upr slopes....43-47 * Max Humidity....... Valleys/lwr slopes...67-82 percent Ridges/upr slopes....60-75 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....North winds 5 to 9 mph...shifting to the northeast 5 to 6 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...69-77 Ridges/upr slopes....65-73 * Min Humidity....... Valleys/lwr slopes...46-56 percent Ridges/upr slopes....43-53 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 6 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to the northwest 5 to 8 mph in the afternoon. * Mixing Height..........3000 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-52 Ridges/upr slopes....46-52 * Max Humidity....... Valleys/lwr slopes...73-88 percent Ridges/upr slopes....64-79 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 8 mph...shifting to the northeast 5 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ406-190130- Eastern Interior Humboldt Including Willow Creek and Hoopa- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...71-79 Ridges/upr slopes....57-65 * Min Humidity....... Valleys/lwr slopes...26-34 percent Ridges/upr slopes....26-34 percent * 20-Foot Winds... Valleys/lwr slopes...East winds 5 mph...shifting to the northwest 5 to 8 mph in the afternoon. Ridges/upr slopes....East winds 5 to 10 mph...shifting to the northwest 6 to 13 mph in the afternoon. * Mixing Height..........5300 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...45-48 Ridges/upr slopes....43-46 * Max Humidity....... Valleys/lwr slopes...62-77 percent Ridges/upr slopes....49-59 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....Northwest winds 6 to 13 mph...shifting to the northeast 5 to 8 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...76-84 Ridges/upr slopes....62-70 * Min Humidity....... Valleys/lwr slopes...29-37 percent Ridges/upr slopes....31-39 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 7 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 8 mph...shifting to the northwest 5 to 10 mph in the afternoon. * Mixing Height..........5100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...49-52 Ridges/upr slopes....49-52 * Max Humidity....... Valleys/lwr slopes...64-79 percent Ridges/upr slopes....52-62 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 12 mph...shifting to the northeast 5 to 6 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ407-190130- Southwestern Humboldt Including the King Range and the Eel River Valley- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...69-77 Ridges/upr slopes....60-68 * Min Humidity....... Valleys/lwr slopes...37-45 percent Ridges/upr slopes....44-54 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 11 mph. Ridges/upr slopes....North winds 10 to 17 mph. * Mixing Height..........3100 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...43-48 Ridges/upr slopes....43-48 * Max Humidity....... Valleys/lwr slopes...78-93 percent Ridges/upr slopes....65-80 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 11 mph. Ridges/upr slopes....North winds 6 to 13 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...74-82 Ridges/upr slopes....64-72 * Min Humidity....... Valleys/lwr slopes...38-48 percent Ridges/upr slopes....47-57 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 11 mph. Ridges/upr slopes....North winds 6 to 13 mph. * Mixing Height..........3000 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-50 Ridges/upr slopes....47-51 * Max Humidity....... Valleys/lwr slopes...80-95 percent Ridges/upr slopes....70-84 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 6 to 13 mph. Ridges/upr slopes....North winds 6 to 13 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ408-190130- Southeastern Interior Humboldt Including Kneeland and Alderpoint- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...67-75 Ridges/upr slopes....60-66 * Min Humidity....... Valleys/lwr slopes...41-51 percent Ridges/upr slopes....44-54 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 11 mph. Ridges/upr slopes....Northwest winds 6 to 13 mph. * Mixing Height..........5100 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...43-48 Ridges/upr slopes....41-46 * Max Humidity....... Valleys/lwr slopes...76-91 percent Ridges/upr slopes....63-78 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 11 mph. Ridges/upr slopes....North winds 6 to 13 mph...shifting to the northeast 5 to 6 mph after midnight. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...71-79 Ridges/upr slopes....64-71 * Min Humidity....... Valleys/lwr slopes...46-56 percent Ridges/upr slopes....49-59 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming northwest 5 to 8 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to the northwest 5 to 9 mph in the afternoon. * Mixing Height..........4400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...47-51 Ridges/upr slopes....46-52 * Max Humidity....... Valleys/lwr slopes...75-90 percent Ridges/upr slopes....62-77 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 9 mph. Ridges/upr slopes....Northwest winds 5 to 10 mph...shifting to the northeast after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ409-190130- Northwestern Trinity Including Salyer and Big Bar- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...72-80 Ridges/upr slopes....57-65 * Min Humidity....... Valleys/lwr slopes...21-29 percent Ridges/upr slopes....20-28 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming northwest 5 to 10 mph in the afternoon. Ridges/upr slopes....East winds 5 to 11 mph...shifting to the northwest 6 to 13 mph in the afternoon. * Mixing Height..........8600 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...44-48 Ridges/upr slopes....41-46 * Max Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....40-50 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 10 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....North winds 6 to 13 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...77-85 Ridges/upr slopes....63-71 * Min Humidity....... Valleys/lwr slopes...21-29 percent Ridges/upr slopes....22-30 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 7 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 8 mph...shifting to the west in the afternoon. * Mixing Height..........7800 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...49-52 Ridges/upr slopes....48-53 * Max Humidity....... Valleys/lwr slopes...58-73 percent Ridges/upr slopes....44-54 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 9 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 12 mph...shifting to the north 5 to 8 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ410-190130- Northeastern Trinity Including Trinity Lake- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...70-78 Ridges/upr slopes....56-64 * Min Humidity....... Valleys/lwr slopes...12-16 percent Ridges/upr slopes....17-23 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 mph. Ridges/upr slopes....Northeast winds 5 to 11 mph. * Mixing Height..........9800 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...44-48 Ridges/upr slopes....37-45 * Max Humidity....... Valleys/lwr slopes...55-65 percent Ridges/upr slopes....38-48 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 7 mph. Ridges/upr slopes....North winds 5 to 12 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...76-84 Ridges/upr slopes....62-70 * Min Humidity....... Valleys/lwr slopes...14-19 percent Ridges/upr slopes....20-26 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........9100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...49-53 Ridges/upr slopes....44-52 * Max Humidity....... Valleys/lwr slopes...54-64 percent Ridges/upr slopes....38-48 percent * 20-Foot Winds... Valleys/lwr slopes...Downslope/downvalley 1 to 3 mph...becoming northwest 5 mph after midnight. Ridges/upr slopes....Northwest winds 5 to 10 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ411-190130- Eastern Trinity Including Weaverville and Hayfork- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...74-80 Ridges/upr slopes....61-69 * Min Humidity....... Valleys/lwr slopes...12-17 percent Ridges/upr slopes....14-22 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northeast 5 to 6 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 9 mph. * Mixing Height..........9400 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...42-46 Ridges/upr slopes....43-46 * Max Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....45-55 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...80-86 Ridges/upr slopes....68-76 * Min Humidity....... Valleys/lwr slopes...13-18 percent Ridges/upr slopes....16-24 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph. Ridges/upr slopes....Northeast winds 5 to 6 mph. * Mixing Height..........8700 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...47-51 Ridges/upr slopes....50-53 * Max Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....46-56 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 9 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ412-190130- Southern Trinity Including Ruth Lake and the Yolla Bollys- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...70-77 Ridges/upr slopes....62-70 * Min Humidity....... Valleys/lwr slopes...21-29 percent Ridges/upr slopes....15-23 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 to 9 mph. Ridges/upr slopes....Northeast winds 5 to 12 mph. * Mixing Height..........7800 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...43-48 Ridges/upr slopes....41-47 * Max Humidity....... Valleys/lwr slopes...56-71 percent Ridges/upr slopes....53-63 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 9 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....North winds 5 to 12 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...74-81 Ridges/upr slopes....67-75 * Min Humidity....... Valleys/lwr slopes...25-33 percent Ridges/upr slopes....19-27 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 7 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to the north 5 to 8 mph in the afternoon. * Mixing Height..........7800 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...47-53 Ridges/upr slopes....45-53 * Max Humidity....... Valleys/lwr slopes...58-72 percent Ridges/upr slopes....54-64 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 7 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 10 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ413-190130- Coastal Mendocino- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...66-74 Ridges/upr slopes....69-77 * Min Humidity....... Valleys/lwr slopes...45-55 percent Ridges/upr slopes....36-44 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph. Ridges/upr slopes....Northwest winds 5 to 11 mph. * Mixing Height..........1900 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...44-49 Ridges/upr slopes....44-51 * Max Humidity....... Valleys/lwr slopes...69-84 percent Ridges/upr slopes....64-79 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...72-80 Ridges/upr slopes....74-82 * Min Humidity....... Valleys/lwr slopes...48-58 percent Ridges/upr slopes....36-44 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 6 mph in the afternoon. Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height..........2000 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...48-53 Ridges/upr slopes....48-56 * Max Humidity....... Valleys/lwr slopes...72-87 percent Ridges/upr slopes....66-81 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ414-190130- Northern Interior Mendocino Including Leggett and Willits- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...75-80 Ridges/upr slopes....68-76 * Min Humidity....... Valleys/lwr slopes...17-25 percent Ridges/upr slopes....19-27 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 12 mph. * Mixing Height..........7400 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...44-48 Ridges/upr slopes....44-50 * Max Humidity....... Valleys/lwr slopes...60-75 percent Ridges/upr slopes....59-74 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....North winds 5 to 12 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...80-86 Ridges/upr slopes....74-82 * Min Humidity....... Valleys/lwr slopes...18-26 percent Ridges/upr slopes....21-29 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming west 5 to 6 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to the northwest 5 to 7 mph in the afternoon. * Mixing Height..........7100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...47-53 Ridges/upr slopes....48-56 * Max Humidity....... Valleys/lwr slopes...63-78 percent Ridges/upr slopes....61-76 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 8 mph...shifting to the northeast 5 mph after midnight. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ415-190130- Northeastern Interior Mendocino Including Covelo- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...73-81 Ridges/upr slopes....63-71 * Min Humidity....... Valleys/lwr slopes...14-21 percent Ridges/upr slopes....13-19 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 9 mph. Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height..........8800 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...43-51 Ridges/upr slopes....46-51 * Max Humidity....... Valleys/lwr slopes...45-55 percent Ridges/upr slopes....35-45 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 9 mph...shifting to the northeast 5 mph after midnight. Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...78-86 Ridges/upr slopes....68-76 * Min Humidity....... Valleys/lwr slopes...18-26 percent Ridges/upr slopes....17-25 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming west 5 to 6 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to the northwest 5 to 7 mph in the afternoon. * Mixing Height..........8100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...48-56 Ridges/upr slopes....51-57 * Max Humidity....... Valleys/lwr slopes...52-62 percent Ridges/upr slopes....40-50 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....West winds 5 to 9 mph...shifting to the north 5 mph after midnight. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ416-190130- Southeastern Interior Mendocino Including Ukiah and Potter Valley- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...76-83 Ridges/upr slopes....71-77 * Min Humidity....... Valleys/lwr slopes...14-21 percent Ridges/upr slopes....15-20 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph. Ridges/upr slopes....Northwest winds 5 to 9 mph. * Mixing Height..........8000 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-54 Ridges/upr slopes....50-58 * Max Humidity....... Valleys/lwr slopes...48-58 percent Ridges/upr slopes....36-46 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...82-89 Ridges/upr slopes....77-83 * Min Humidity....... Valleys/lwr slopes...14-19 percent Ridges/upr slopes....13-18 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 7 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to the northwest 5 to 7 mph in the afternoon. * Mixing Height..........8000 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...52-60 Ridges/upr slopes....57-65 * Max Humidity....... Valleys/lwr slopes...47-57 percent Ridges/upr slopes....35-45 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 9 mph in the evening...becoming downslope/downvalley 2 to 5 mph. Ridges/upr slopes....Northwest winds 5 to 9 mph...shifting to the north 5 to 6 mph after midnight. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ417-190130- Southwestern Interior Mendocino Including Boonville- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...72-80 Ridges/upr slopes....71-79 * Min Humidity....... Valleys/lwr slopes...22-30 percent Ridges/upr slopes....25-33 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph. Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height..........5100 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-52 Ridges/upr slopes....47-53 * Max Humidity....... Valleys/lwr slopes...57-72 percent Ridges/upr slopes....54-64 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height..........300 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...79-87 Ridges/upr slopes....77-85 * Min Humidity....... Valleys/lwr slopes...23-31 percent Ridges/upr slopes....25-33 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 to 6 mph in the afternoon. Ridges/upr slopes....Variable 2 to 4 mph...becoming northwest 5 to 7 mph in the afternoon. * Mixing Height..........6600 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...51-59 Ridges/upr slopes....53-61 * Max Humidity....... Valleys/lwr slopes...57-72 percent Ridges/upr slopes....53-63 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ418-190130- Northern Lake Including Gravelly Valley- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...77-82 Ridges/upr slopes....64-72 * Min Humidity....... Valleys/lwr slopes...9-13 percent Ridges/upr slopes....11-16 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 9 to 16 mph. Ridges/upr slopes....Northeast winds 9 to 16 mph. * Mixing Height..........8100 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...47-55 Ridges/upr slopes....49-55 * Max Humidity....... Valleys/lwr slopes...33-43 percent Ridges/upr slopes....21-29 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...83-88 Ridges/upr slopes....70-78 * Min Humidity....... Valleys/lwr slopes...12-16 percent Ridges/upr slopes....12-20 percent * 20-Foot Winds... Valleys/lwr slopes...Northeast winds 5 to 6 mph...shifting to the northwest 5 to 8 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 to 9 mph. * Mixing Height..........8500 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...51-59 Ridges/upr slopes....53-61 * Max Humidity....... Valleys/lwr slopes...39-49 percent Ridges/upr slopes....27-35 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 6 mph...shifting to the north after midnight. Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ419-190130- Eastern Lake Including Clearlake and Middletown- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...77-82 Ridges/upr slopes....71-77 * Min Humidity....... Valleys/lwr slopes...8-11 percent Ridges/upr slopes....8-12 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 8 to 15 mph. Ridges/upr slopes....Breezy. North winds 10 to 17 mph. * Mixing Height..........7600 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...50-54 Ridges/upr slopes....53-60 * Max Humidity....... Valleys/lwr slopes...31-41 percent Ridges/upr slopes....22-30 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 6 to 13 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...84-88 Ridges/upr slopes....77-83 * Min Humidity....... Valleys/lwr slopes...10-13 percent Ridges/upr slopes....11-16 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 11 mph. Ridges/upr slopes....North winds 5 to 11 mph. * Mixing Height..........9100 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...52-58 Ridges/upr slopes....57-65 * Max Humidity....... Valleys/lwr slopes...41-51 percent Ridges/upr slopes....27-35 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 7 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ420-190130- Southern Lake Including Cobb and Konocti- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...79-82 Ridges/upr slopes....72-78 * Min Humidity....... Valleys/lwr slopes...9-13 percent Ridges/upr slopes....9-12 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 7 to 14 mph. Ridges/upr slopes....North winds 7 to 14 mph. * Mixing Height..........8000 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...50-56 Ridges/upr slopes....55-60 * Max Humidity....... Valleys/lwr slopes...34-44 percent Ridges/upr slopes....25-33 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...84-88 Ridges/upr slopes....77-84 * Min Humidity....... Valleys/lwr slopes...12-15 percent Ridges/upr slopes....11-14 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height..........8900 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...53-61 Ridges/upr slopes....61-66 * Max Humidity....... Valleys/lwr slopes...37-47 percent Ridges/upr slopes....26-34 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph. Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ CAZ421-190130- Western Lake Including Lakeport- 1247 AM PDT Mon May 18 2026 .TODAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...76-81 Ridges/upr slopes....72-75 * Min Humidity....... Valleys/lwr slopes...12-15 percent Ridges/upr slopes....13-16 percent * 20-Foot Winds... Valleys/lwr slopes...North winds 5 to 8 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........8600 ft AGL. * Chc of Wetting Rain....0 percent. .TONIGHT... * Sky/Weather............Clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-51 Ridges/upr slopes....49-57 * Max Humidity....... Valleys/lwr slopes...42-52 percent Ridges/upr slopes....30-40 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....North winds 5 to 9 mph. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Sunny. * Chance Lightning.......0%. * Max Temperature....... Valleys/lwr slopes...81-87 Ridges/upr slopes....around 80 * Min Humidity....... Valleys/lwr slopes...13-17 percent Ridges/upr slopes....13-16 percent * 20-Foot Winds... Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming northwest 5 mph in the afternoon. Ridges/upr slopes....Northeast winds 5 mph...shifting to the northwest 5 to 6 mph in the afternoon. * Mixing Height..........8400 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY NIGHT... * Sky/Weather............Mostly clear. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...51-57 Ridges/upr slopes....56-64 * Max Humidity....... Valleys/lwr slopes...45-55 percent Ridges/upr slopes....31-41 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 7 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Northwest winds 6 to 10 mph...shifting to the north 5 to 6 mph after midnight. * Mixing Height..........400 ft AGL. * Chc of Wetting Rain....0 percent. $$ .EXTENDED FORECAST FOR DAYS 3 THROUGH 5... ...Northwest California Coast... .WEDNESDAY...Mostly clear. Patchy fog after midnight. Lows 48 to 54. Highs 63 to 73. North winds 5 mph. .THURSDAY...Mostly clear. Patchy fog in the morning. Patchy fog after midnight. Lows 49 to 54. Highs 64 to 74. Northwest winds 5 mph. .FRIDAY...Partly cloudy. Patchy fog after midnight. Lows 47 to 52. Highs 62 to 70. Northwest winds 5 mph. ...Northwest California Interior... .WEDNESDAY...Mostly clear. Lows 53 to 61. Highs 80 to 91. Northwest winds 5 mph. .THURSDAY...Clear. Lows 54 to 62. Highs 83 to 94. West winds 5 mph. .FRIDAY...Mostly clear. Lows 50 to 58. Highs 80 to 91. West winds 5 mph. .6 to 10 DAY OUTLOOK...Saturday May 23 THROUGH Wednesday May 27, 2026... FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION. $$ visit us at www.weather.gov/eureka