FNUS56 KMFR 180703 FWFMFR Fire Weather Forecast for southern Oregon and northern California National Weather Service Medford, OR 1203 AM PDT Mon May 18 2026 .DISCUSSION...The air mass is expected to be dry and stable this week with typical afternoon breezes. Meanwhile, an overall warming trend is expected through the week, including above normal highs with northeast winds at the south coast. Slight cooling is possible this weekend or early next week. ORZ615-618-182315- South Central Oregon Coast-Southern Oregon Coast- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Partly cloudy in the morning then clearing. * Max temperature.......60-70. * Min humidity..........55-70 percent valleys and 50-60 percent ridges. * 20-foot winds......... * Coast.....North winds 5 to 8 mph increasing to 9 to 20 mph with gusts to around 30 mph in the afternoon. Near the Chetco Drainage, north winds 10 to 20 mph. * Inland....North winds 9 to 20 mph with gusts to around 25 mph except north 9 to 20 mph near the Chetco Drainage. * Mixing Height.....................500-3600 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Brookings 68 50 North Bend 63 54 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......Around 45. * Max humidity..........85-100 percent. * 20-foot winds......... * Coast.....North winds 5 to 15 mph. Gusts up to 25 mph in the evening. * Inland....North winds 5 to 15 mph. Gusts up to 30 mph. * Mixing Height.....................700-2500 ft AGL until midnight, then 500 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Brookings 49 82 North Bend 44 98 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......60-70. * Min humidity..........60-70 percent valleys and 55-60 percent ridges. * 20-foot winds......... * Coast.....North winds 5 to 15 mph. * Inland....North winds 5 to 15 mph. * Mixing Height.....................500 ft AGL until 0900, then 1700-3700 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Brookings 70 47 North Bend 65 59 .EXTENDED... .TUESDAY NIGHT...Mostly cloudy. Lows around 50. North winds 6 to 10 mph. .WEDNESDAY...Partly cloudy in the morning then clearing. Highs 60 to 70. North winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 45 to 55. Highs 65 to 75. North winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 45 to 55. Highs 60 to 70. North winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 45 to 50. Highs 65 to 70. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 60 to 70. $$ ORZ616-182315- Umpqua Basin- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Mostly cloudy until 0900, then partly cloudy until noon, then sunny. * Max temperature.......65-70 valleys and 55-60 ridges. * Min humidity..........35-50 percent valleys and 45-55 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 9 to 20 mph. * Ridges/upr slopes....North winds 9 to 20 mph. * Mixing Height.....................500 ft AGL until 0900. 4200-5600 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain(.25 in)...0 percent. && TEMP / HUM / POP North Bank 67 41 Roseburg 72 34 Silver Butte 62 44 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......Around 40. * Max humidity..........85-95 percent. * 20-foot winds......... * Valleys/lwr slopes...Northwest winds 5 to 10 mph. Gusts up to 20 mph early in the evening. * Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height.....................3300-5400 ft AGL until 2100, then 400-1100 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP North Bank 42 90 Roseburg 43 87 Silver Butte 40 88 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......70-75 valleys and 55-60 ridges. * Min humidity..........35-50 percent valleys and 45-60 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph. * Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height.....................500 ft AGL until 0900. 4200-5200 ft AGL after 1500. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP North Bank 69 39 Roseburg 75 33 Silver Butte 63 42 .EXTENDED... .TUESDAY NIGHT...Partly cloudy. Lows in the mid 40s. North winds 5 to 8 mph. .WEDNESDAY...Partly cloudy in the morning then clearing. Highs 65 to 75. North winds 5 to 6 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 70 to 80. North winds 5 to 8 mph. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 70 to 75. North winds 5 to 8 mph. .SATURDAY...Mostly clear. Lows 45 to 50. Highs 70 to 75. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 70 to 75. $$ ORZ617-182315- Umpqua National Forest- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Mostly cloudy until 0900, then partly cloudy until 1500, then sunny. * Max temperature.......60-65 valleys and 50-55 ridges. * Min humidity..........30-45 percent. * 20-foot winds......... * Valleys/lwr slopes...Northwest winds 5 to 10 mph. * Ridges/upr slopes....Northwest winds 5 to 10 mph with gusts to around 20 mph. * Mixing Height.....................500 ft AGL until 0900. 5000-7500 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Toketee Falls 68 28 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......35-40. * Max humidity..........75-85 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 8 to 10 mph shifting to the northeast after midnight. * Ridges/upr slopes....North winds 5 to 15 mph shifting to the northeast 5 to 6 mph after midnight. * Mixing Height.....................4500-6000 ft AGL until 2100, then 400-1400 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Toketee Falls 36 86 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......60-70 valleys and 55-60 ridges. * Min humidity..........35-50 percent. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds around 5 mph shifting to the northwest in the afternoon. * Ridges/upr slopes....North winds 5 to 6 mph shifting to the northwest 5 to 15 mph in the afternoon. * Mixing Height.....................500 ft AGL until 0900. 4200-6000 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Toketee Falls 72 30 .EXTENDED... .TUESDAY NIGHT...Partly cloudy. Lows 40 to 45. North winds 5 to 8 mph. .WEDNESDAY...Mostly clear. Highs 60 to 70. Light winds becoming northwest 5 to 8 mph in the afternoon and evening. .THURSDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. Northwest winds 5 to 8 mph. .FRIDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. Northwest winds 5 to 6 mph. .SATURDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. .SUNDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. $$ ORZ619-182315- Western Siskiyou National Forest- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Partly cloudy early in the morning then clearing. * Max temperature.......60-70. * Min humidity..........40-60 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 15 mph. * Ridges/upr slopes....North winds 5 to 15 mph with gusts to around 25 mph. * Mixing Height.....................500 ft AGL until 0900. 3900-6400 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Quail Prairie 68 42 Agness 76 33 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......40-50. * Max humidity..........75-90 percent. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 15 mph. * Ridges/upr slopes....Northeast winds 5 to 15 mph with gusts to around 30 mph. * Mixing Height.....................2500-4500 ft AGL until 2100, then 500-1100 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Quail Prairie 47 79 Agness 45 83 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......65-75. * Min humidity..........40-55 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph. * Ridges/upr slopes....Northeast winds 5 to 15 mph with gusts to around 25 mph. * Mixing Height.....................500 ft AGL until 0900, then 2300-5400 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Quail Prairie 71 43 Agness 79 31 .EXTENDED... .TUESDAY NIGHT...Partly cloudy. Lows 45 to 50. North winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Highs 65 to 75. North winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 50 to 55. Highs 70 to 80. North winds 6 to 10 mph. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 65 to 75. North winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 50 to 55. Highs 65 to 75. .SUNDAY...Mostly clear. Lows 45 to 50. Highs 65 to 75. $$ ORZ620-622-182315- Western Rogue Basin including the Illinois Valley- Eastern Rogue Valley- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Partly cloudy in the morning then clearing. * Max temperature.......70-75 valleys and 55-65 ridges. * Min humidity..........20-30 percent valleys and 25-40 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 6 mph shifting to the north 5 to 8 mph in the afternoon. Near Ashland, light winds becoming northwest 6 to 15 mph in the afternoon. * Ridges/upr slopes....North winds 5 to 10 mph. Gusts up to 20 mph late in the afternoon. * Mixing Height.....................500 ft AGL until 0900. 5400-7700 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Onion Mtn 61 31 Illinois Vly 74 22 Medford 75 18 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......40-45. * Max humidity..........75-90 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 15 mph. * Ridges/upr slopes....North winds 5 to 15 mph with gusts to around 25 mph. * Mixing Height.....................4700-6700 ft AGL until 2100, then 400-1400 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Onion Mtn 41 81 Illinois Vly 38 96 Medford 41 85 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80 valleys and 60-65 ridges. * Min humidity..........20-30 percent valleys and 30-45 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 8 mph. * Ridges/upr slopes....North winds 5 to 8 mph. Gusts up to 20 mph in the afternoon. * Mixing Height.....................500 ft AGL until 0900. 4100-6100 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Onion Mtn 62 35 Illinois Vly 79 26 Medford 79 21 .EXTENDED... .TUESDAY NIGHT...Mostly clear. Lows in the mid 40s. North winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Highs 70 to 80. North winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. North winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. North winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. .SUNDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. $$ ORZ621-623-182315- Siskiyou Mountains-Southern Oregon Cascades- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Partly cloudy. * Max temperature.......60-65 valleys and 50-55 ridges. * Min humidity..........20-30 percent. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 10 mph. * Ridges/upr slopes....Northeast winds 5 to 8 mph shifting to the northwest with gusts to around 20 mph in the afternoon. * Mixing Height.....................500 ft AGL until 0900. 6900-9400 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Acorn Woman Pk 55 29 Mt Stella 60 28 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......35-40. * Max humidity..........70-85 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 15 mph. * Ridges/upr slopes....North winds 5 to 15 mph with gusts to around 25 mph. * Mixing Height.....................5600-7700 ft AGL until 2100, then 500-1600 ft AGL. * Chance of lightning...............0 percent.* Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Acorn Woman Pk 38 82 Mt Stella 40 67 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......65-70 valleys and 55-60 ridges. * Min humidity..........25-40 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 8 mph. * Ridges/upr slopes....Northeast winds 5 to 8 mph shifting to the northwest with gusts to around 20 mph in the afternoon. * Mixing Height.....................500 ft AGL until 0900. 5200-7300 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Acorn Woman Pk 59 33 Mt Stella 63 31 .EXTENDED... .TUESDAY NIGHT...Mostly clear. Lows 35 to 45. Northwest winds 6 to 10 mph. .WEDNESDAY...Sunny in the morning then becoming clear. Highs 60 to 70. North winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. Northwest winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. .SUNDAY...Mostly clear. Lows 40 to 50. Highs 65 to 75. $$ ORZ624-182315- Klamath Basin and the Fremont-Winema National Forest- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Mostly cloudy until noon, then partly cloudy. * Max temperature.......60-65 valleys and 50-55 ridges. * Min humidity..........15-20 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 8 mph. * Ridges/upr slopes....North winds 5 to 10 mph. Gusts up to 20 mph in the morning. * Mixing Height.....................400-700 ft AGL until 0900. 8600-11100 ft AGL after noon. * Chance of lightning...............1 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Hoyt 62 15 Chiloquin 65 19 Gerber 63 17 .TONIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......25-35. * Max humidity..........70-85 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph with gusts to around 20 mph. * Ridges/upr slopes....North winds 5 to 10 mph with gusts to around 20 mph. * Mixing Height.....................9100-11000 ft AGL until 2100, then 500-2300 ft AGL. * Chance of lightning...............1 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Hoyt 31 75 Chiloquin 34 83 Gerber 31 82 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......65-70 valleys and 55-60 ridges. * Min humidity..........20-25 percent. * 20-foot winds......... * Valleys/lwr slopes...Northwest winds 5 to 6 mph. * Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height.....................500 ft AGL until 0900. 7000-10000 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Hoyt 68 21 Chiloquin 70 23 Gerber 69 22 .EXTENDED... .TUESDAY NIGHT...Partly cloudy. Lows 35 to 40. Northwest winds 6 to 10 mph. .WEDNESDAY...Mostly clear. Highs 65 to 75. North winds 5 to 6 mph. .THURSDAY...Mostly clear. Lows 35 to 45. Highs 70 to 80. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 40 to 45. Highs 70 to 80. West winds 5 to 8 mph. .SATURDAY...Mostly clear. Lows 35 to 45. Highs 70 to 80. .SUNDAY...Mostly clear. Lows 35 to 45. Highs 70 to 80. $$ ORZ625-182315- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Mostly cloudy until 1500, then partly cloudy. * Max temperature.......60-65 valleys and 50-55 ridges. * Min humidity..........10-15 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph. * Ridges/upr slopes....North winds 5 to 15 mph. * Mixing Height.....................600 ft AGL until 0900. 8600-10900 ft AGL after noon. * Chance of lightning...............1 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Fish Fin Rim 62 12 Fort Rock 65 12 Rock Creek 59 15 .TONIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......30-35. * Max humidity..........65-85 percent valleys and 55-70 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph with gusts to around 25 mph. * Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height.....................9800-11000 ft AGL until 2100, then 500-2100 ft AGL. * Chance of lightning...............1 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Fish Fin Rim 33 56 Fort Rock 27 87 Rock Creek 33 67 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......Around 70 valleys and around 60 ridges. * Min humidity..........15-20 percent. * 20-foot winds......... * Valleys/lwr slopes...Northwest winds 5 to 6 mph. * Ridges/upr slopes....Northwest winds 5 to 8 mph. * Mixing Height.....................700 ft AGL until 0900. 7500-9800 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Fish Fin Rim 69 11 Fort Rock 70 18 Rock Creek 65 17 .EXTENDED... .TUESDAY NIGHT...Partly cloudy. Lows 35 to 40. Northwest winds 6 to 10 mph. .WEDNESDAY...Partly cloudy in the morning then clearing. Highs 70 to 75. Northwest winds 5 to 8 mph. .THURSDAY...Mostly clear. Lows 35 to 45. Highs 75 to 80. North winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 40 to 45. Highs 75 to 80. Northwest winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 40 to 45. Highs 75 to 80. .SUNDAY...Mostly clear. Lows 40 to 45. Highs 75 to 80. $$ CAZ280-182315- Western Klamath National Forest- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Sunny. * Max temperature.......70-75 valleys and 55-60 ridges. * Min humidity..........10-20 percent valleys and 20-30 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 10 mph. * Ridges/upr slopes....Northeast winds 5 to 10 mph. Gusts up to 20 mph early in the morning. * Mixing Height.....................500 ft AGL until 0900. 6800-9100 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Happy Camp 76 16 Fort Jones71 15 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......40-45. * Max humidity..........65-85 percent valleys and 60-75 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 15 mph. * Ridges/upr slopes....Northeast winds 5 to 15 mph. Gusts up to 25 mph in the evening. * Mixing Height.....................6600-8600 ft AGL until 2100, then 400-1700 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Happy Camp 43 88 Fort Jones 39 79 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80 valleys and 55-65 ridges. * Min humidity..........15-25 percent valleys and 30-40 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 8 mph. * Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height.....................500 ft AGL until 0900. 5800-7700 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Happy Camp 81 20 Fort Jones 77 19 .EXTENDED... .TUESDAY NIGHT...Mostly clear. Lows 40 to 50. North winds 5 to 8 mph. .WEDNESDAY...Sunny in the morning then becoming clear. Highs 70 to 80. North winds 5 to 10 mph. .THURSDAY...Clear. Lows 45 to 55. Highs 75 to 85. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 75 to 85. Northwest winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 50 to 55. Highs 75 to 85. .SUNDAY...Mostly clear. Lows 45 to 50. Highs 70 to 80. $$ CAZ281-182315- Central Siskiyou County Including Shasta Valley- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Sunny. * Max temperature.......70-75 valleys and 55-60 ridges. * Min humidity..........10-15 percent valleys and 15-25 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph. * Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height.....................500 ft AGL until 0900. 7500-10200 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Yreka 72 15 .TONIGHT... * Sky/weather...........Clear. * Min temperature.......35-40. * Max humidity..........70-80 percent valleys and 60-70 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 9 to 20 mph with gusts to around 30 mph shifting to the northwest 5 to 6 mph after midnight. * Ridges/upr slopes....North winds 5 to 15 mph. Gusts up to 25 mph in the evening. * Mixing Height.....................7900-9200 ft AGL until 2100, then 400-1700 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Yreka 39 68 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80 valleys and 60-65 ridges. * Min humidity..........15-20 percent valleys and 25-30 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 8 mph. * Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height.....................500 ft AGL until 0900. 5100-7700 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Yreka 78 18 .EXTENDED... .TUESDAY NIGHT...Mostly clear. Lows 40 to 45. North winds 6 to 10 mph. .WEDNESDAY...Sunny in the morning then becoming clear. Highs 70 to 80. Light winds becoming north 5 to 10 mph in the afternoon and evening. .THURSDAY...Clear. Lows 45 to 50. Highs 75 to 85. North winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. North winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. .SUNDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. $$ CAZ282-182315- Shasta-Trinity National Forest in Siskiyou County- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Sunny. * Max temperature.......65-70 valleys and 50-55 ridges. * Min humidity..........15-25 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 15 mph. * Ridges/upr slopes....North winds 5 to 15 mph. * Mixing Height.....................600 ft AGL until 0900. 8700-10900 ft AGL after 1500. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Mount Shasta 70 13 .TONIGHT... * Sky/weather...........Mostly clear. * Min temperature.......30-40. * Max humidity..........70-90 percent valleys and 50-65 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph. * Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height.....................8100-10900 ft AGL until 2100, then 600 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Mount Shasta 37 73 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......Around 75 valleys and 55-60 ridges. * Min humidity..........15-20 percent valleys and 25-35 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 8 mph. * Ridges/upr slopes....Northeast winds 5 to 10 mph. * Mixing Height.....................500 ft AGL until 0900. 7000-9600 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Mount Shasta 76 16 .EXTENDED... .TUESDAY NIGHT...Mostly clear. Lows 35 to 45. Northwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Highs 70 to 80. North winds 5 to 6 mph shifting to the northwest in the afternoon and evening. .THURSDAY...Mostly clear. Lows 40 to 50. Highs 75 to 85. West winds 5 to 6 mph. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. Southwest winds 5 to 6 mph. .SATURDAY...Mostly clear. Lows 40 to 50. Highs 75 to 85. .SUNDAY...Mostly clear. Lows 40 to 50. Highs 75 to 85. $$ CAZ284-285-182315- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 1203 AM PDT Mon May 18 2026 .Today... * Sky/weather...........Partly cloudy. * Max temperature.......60-65 valleys and 50-55 ridges. * Min humidity..........15-20 percent. * 20-foot winds......... * Valleys/lwr slopes...Northeast winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. * Ridges/upr slopes....Northeast winds 5 to 15 mph with gusts to around 25 mph except northeast 5 to 15 mph along Warner Mountain ridges. * Mixing Height.....................500-800 ft AGL until 0900. 9700-11000 ft AGL after1500. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Juanita lake 66 14 Tulelake 66 17 Alturas 65 15 .TONIGHT... * Sky/weather...........Partly cloudy until 0300, then clear. * Min temperature.......30-40. * Max humidity..........65-80 percent valleys and 50-70 percent ridges. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 10 mph. Gusts up to 20 mph early in the evening. * Ridges/upr slopes....North winds 5 to 10 mph. * Mixing Height.....................9500-10900 ft AGL until 2100, then 400-1000 ft AGL. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Juanita lake 38 65 Tulelake 34 75 Alturas 27 78 .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......65-75 valleys and 55-60 ridges. * Min humidity..........15-25 percent. * 20-foot winds......... * Valleys/lwr slopes...North winds 5 to 8 mph. * Ridges/upr slopes....North winds 5 to 8 mph. * Mixing Height.....................500 ft AGL until 0900. 6800-9500 ft AGL after noon. * Chance of lightning...............0 percent. * Chance of wetting rain (.10 in)...0 percent. * Chance of wetting rain (.25 in)...0 percent. && TEMP / HUM / POP Juanita lake 71 18 Tulelake 72 21 Alturas 71 17 .EXTENDED... .TUESDAY NIGHT...Mostly clear. Lows 35 to 45. Northwest winds 5 to 8 mph. .WEDNESDAY...Mostly clear. Highs 70 to 80. North winds 5 to 6 mph. .THURSDAY...Mostly clear. Lows 40 to 50. Highs 70 to 80. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. West winds 5 to 8 mph. .SATURDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. .SUNDAY...Mostly clear. Lows 40 to 50. Highs 75 to 85. $$ .OUTLOOK FOR MAY 25 - 31 2026 For Oregon...Increased probabilities for above normal temperatures and near normal precipitation. For Nrn Calif...Increased probabilities for above normal temperatures and above normal precipitation. = $$