FNUS56 KSEW 192230 FWFSEW Fire Weather Planning Forecast for Western Washington National Weather Service Seattle WA 330 PM PDT Tue May 19 2026 .DISCUSSION... High pressure aloft will begin to rebuild across Western Washington on Wednesday and remain in place into Friday for a return to some sunshine and warmer temperatures. The ridge will weaken over the upcoming holiday weekend for a cooling trend and a chance of rain by Memorial Day. Forecast for 20 foot wind speed (valleys and ridge tops) are 10 minute averages reflecting RAWS winds. WAZ649-201100- North and Central Coastal Strip- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. * Chance of precip.....0%. * Min temperature......43-53. * Max humidity.........82-97 percent. * 20-foot winds........ * Valleys/lwr slopes..Northwest winds 5 to 9 mph. * Ridges/upr slopes...Northwest winds 4 to 9 mph. * Mixing height........900-1500 ft AGL. * Transport winds......Northwest around 10 mph. .WEDNESDAY... * Sky/weather..........Partly sunny. * Chance of precip.....0%. * Max temperature......56-66. * Min humidity.........64-79 percent. * 20-foot winds........ * Valleys/lwr slopes..Northwest winds 3 to 6 mph. * Ridges/upr slopes...West winds 3 to 6 mph. * Mixing height........1200-1700 ft AGL. * Transport winds......Northwest around 5 mph. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy. * Chance of precip.....0%. * Min temperature......43-53. * Max humidity.........85-100 percent. * 20-foot winds........ * Valleys/lwr slopes..Northwest winds 3 to 6 mph. * Ridges/upr slopes...Northwest winds 3 to 6 mph. * Mixing height........500-900 ft AGL. * Transport winds......Northwest 5 to 10 mph. .THURSDAY... * Sky/weather..........Partly sunny then becoming sunny. * Chance of precip.....0%. * Max temperature......61-71. * Min humidity.........63-78 percent. * 20-foot winds........ * Valleys/lwr slopes..Light winds becoming west around 6 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 5 mph in the afternoon. * Mixing height........600-1300 ft AGL. * Transport winds......Northeast around 5 mph shifting to the west in the afternoon. .FRIDAY...Partly cloudy. Lows in the lower 50s. Highs 60 to 70. West winds 5 to 8 mph. .SATURDAY...Mostly cloudy. Lows in the lower 50s. Highs in the lower 60s. Northwest winds around 6 mph. .SUNDAY...Mostly cloudy. Slight chance of rain. Lows in the upper 40s. Highs 55 to 65. Northwest winds around 6 mph. .MEMORIAL DAY...Mostly cloudy. Rain likely. Lows in the upper 40s. Highs in the upper 50s. .TUESDAY...Partly cloudy. Slight chance of rain. Lows in the upper 40s. Highs in the lower 60s. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ650-201100- North Coastal Lowlands- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy then becoming partly cloudy. * Chance of precip.....0%. * Min temperature......41-51. * Max humidity.........81-96 percent. * 20-foot winds........ * Valleys/lwr slopes..Northwest winds 3 to 6 mph. * Ridges/upr slopes...West winds 3 to 6 mph. * Mixing height........500-1400 ft AGL. * Transport winds......Northwest 5 to 10 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......58-68. * Min humidity.........59-74 percent. * 20-foot winds........ * Valleys/lwr slopes..Light winds becoming west around 5 mph in the afternoon. * Ridges/upr slopes...Light winds becoming northwest around 5 mph in the afternoon. * Mixing height........1400-2400 ft AGL. * Transport winds......Southeast around 5 mph shifting to the northwest in the afternoon. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy. * Chance of precip.....0%. * Min temperature......43-53. * Max humidity.........77-92 percent. * 20-foot winds........ * Valleys/lwr slopes..Northwest winds around 4 mph in the evening becoming light. * Ridges/upr slopes...Northwest winds around 5 mph in the evening becoming light. * Mixing height........400-1200 ft AGL. * Transport winds......North around 5 mph. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......62-72. * Min humidity.........55-70 percent. * 20-foot winds........ * Valleys/lwr slopes..Light winds becoming west around 5 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 5 mph in the afternoon. * Mixing height........1000-2000 ft AGL. * Transport winds......East around 5 mph shifting to the west in the afternoon. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows around 50. Highs 62 to 72. West winds 3 to 6 mph. .SUNDAY...Mostly cloudy. Slight chance of rain. Lows in the upper 40s. Highs 55 to 65. West winds around 4 mph. .MEMORIAL DAY...Mostly cloudy with rain likely. Lows in the upper 40s. Highs 51 to 61. .TUESDAY...Partly cloudy. Slight chance of rain. Lows in the mid 40s. Highs 56 to 66. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ651-201100- Central Coastal Lowlands- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. * Chance of precip.....0%. * Min temperature......Around 46. * Max humidity.........82-97 percent. * 20-foot winds........ * Valleys/lwr slopes..West winds 5 to 9 mph. * Ridges/upr slopes...Northwest winds 5 to 9 mph. * Mixing height........700-1700 ft AGL. * Transport winds......Northwest 5 to 10 mph. .WEDNESDAY... * Sky/weather..........Partly sunny. * Chance of precip.....0%. * Max temperature......60-70. * Min humidity.........55-70 percent...except 61-71 percent ridges. * 20-foot winds........ * Valleys/lwr slopes..Light winds becoming west around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 5 mph in the afternoon. * Mixing height........1200 ft AGL increasing to 3200 ft AGL in the afternoon. * Transport winds......Northwest around 5 mph. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy. Patchy fog after midnight. * Chance of precip.....0%. * Min temperature......41-51. * Max humidity.........81-96 percent. * 20-foot winds........ * Valleys/lwr slopes..West winds around 6 mph in the evening becoming light. * Ridges/upr slopes...West winds around 6 mph in the evening becoming light. * Mixing height........400-1400 ft AGL. * Transport winds......Northwest around 5 mph. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......67-77. * Min humidity.........43-58 percent...except 48-61 percent ridges. * 20-foot winds........ * Valleys/lwr slopes..Light winds becoming west around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 5 mph in the afternoon. * Mixing height........500 ft AGL increasing to 2900 ft AGL in the afternoon. * Transport winds......Northeast around 5 mph shifting to the northwest in the afternoon. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows around 50. Highs 67 to 77. West winds 3 to 7 mph. .SUNDAY...Mostly cloudy. Lows in the upper 40s. Highs 60 to 70. West winds around 6 mph. .MEMORIAL DAY...Mostly cloudy. Chance of rain. Lows in the upper 40s. Highs in the upper 50s. .TUESDAY...Partly cloudy. Slight chance of rain. Lows in the mid 40s. Highs 60 to 70. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ652-201100- West Portion of the Olympic Mountains- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy then becoming partly cloudy. * Chance of precip.....0%. * Min temperature......35-45. * Max humidity.........78-93 percent. * 20-foot winds........ * Valleys/lwr slopes..Northwest winds around 6 mph in the evening becoming light. * Ridges/upr slopes...Northwest winds around 7 mph in the evening becoming light. * Snow level...........6000 feet. * Mixing height........400-1300 ft AGL. * Transport winds......Northwest around 10 mph shifting to the north after midnight. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......50-60. * Min humidity.........58-73 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 1 to 5 mph. * Ridges/upr slopes...Light winds becoming west around 6 mph in the afternoon. * Snow level...........6500 feet. * Mixing height........1100 ft AGL increasing to 3300 ft AGL in the afternoon. * Transport winds......Northeast around 5 mph shifting to the northwest in the afternoon. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy then becoming partly cloudy. * Chance of precip.....0%. * Min temperature......38-48. * Max humidity.........67-82 percent. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 3 to 4 mph. * Ridges/upr slopes...Northwest winds around 6 mph shifting to the northeast around 3 mph after midnight. * Snow level...........7000 feet. * Mixing height........500-1500 ft AGL. * Transport winds......North around 5 mph shifting to the northeast after midnight. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......63-73...except 57-67 ridges. * Min humidity.........47-62 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...Northeast winds around 3 mph shifting to the west around 6 mph in the afternoon. * Snow level...........7500 feet. * Mixing height........500 ft AGL increasing to 3700 ft AGL in the afternoon. * Transport winds......East around 5 mph shifting to the west in the afternoon. .FRIDAY...Mostly clear. Snow level 7500 feet. Lows in the upper 40s. Highs 60 to 70. West winds 3 to 6 mph. .SATURDAY...Partly cloudy. Snow level 7500 feet. Lows around 50. Highs 59 to 69. West winds around 4 mph. .SUNDAY...Mostly cloudy. Slight chance of rain. Snow level 6000 feet. Lows in the mid 40s. Highs 52 to 62. West winds around 5 mph. .MEMORIAL DAY...Rain and snow likely. Snow level 5000 feet. Lows 39 to 49. Highs 44 to 54. .TUESDAY...Partly cloudy. Chance of rain and slight chance of snow. Snow level 5500 feet. Lows 36 to 46. Highs 51 to 61. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ661-201100- East Portion of the Olympic Mountains- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy then becoming partly cloudy. Patchy dense fog in the evening. Slight chance of rain in the evening. * Chance of precip.....10%. * Min temperature......37-47. * Max humidity.........80-95 percent. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 1 to 4 mph. * Ridges/upr slopes...Northwest winds around 4 mph in the evening becoming light. * Snow level...........6500 feet. * Mixing height........500-1300 ft AGL. * Transport winds......Northwest around 5 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......56-66...except 50-60 ridges. * Min humidity.........58-73 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 2 to 4 mph. * Ridges/upr slopes...Light winds becoming north around 6 mph in the afternoon. * Snow level...........6500 feet. * Mixing height........1600-2600 ft AGL. * Transport winds......North around 5 mph. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy then becoming partly cloudy. * Chance of precip.....0%. * Min temperature......38-48. * Max humidity.........71-86 percent...except 62-77 percent ridges. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 2 to 3 mph. * Ridges/upr slopes...Northwest winds 3 to 6 mph. * Snow level...........7000 feet. * Mixing height........400-1400 ft AGL. * Transport winds......North around 5 mph. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......63-73...except 57-67 ridges. * Min humidity.........46-61 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...North winds 3 to 6 mph. * Snow level...........7500 feet. * Mixing height........600 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds......Northeast around 5 mph shifting to the northwest in the afternoon. .FRIDAY...Mostly clear. Snow level 8000 feet. Lows 44 to 54. Highs 63 to 73 valleys...56 to 66 ridges. West winds 3 to 6 mph. .SATURDAY...Partly cloudy. Snow level 8000 feet. Lows 44 to 54. Highs 59 to 69. West winds around 3 mph. .SUNDAY...Partly cloudy. Slight chance of rain. Snow level 6500 feet. Lows 41 to 51. Highs 52 to 62. Southwest winds around 5 mph. .MEMORIAL DAY...Mostly cloudy. Chance of rain and snow. Snow level 5500 feet. Lows 38 to 48. Highs 48 to 58 valleys...40 to 50 ridges. .TUESDAY...Partly cloudy. Slight chance of rain and snow. Snow level 5500 feet. Lows 34 to 44. Highs 54 to 64 valleys...46 to 56 ridges. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ653-201100- Strait of Juan De Fuca and Northwest Interior Lowlands- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy then becoming partly cloudy. * Chance of precip.....0%. * Min temperature......42-52. * Max humidity.........81-96 percent. * 20-foot winds........West winds 3 to 6 mph. * Mixing height........400-800 ft AGL. * Transport winds......West 5 to 10 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......60-70. * Min humidity.........55-70 percent. * 20-foot winds........Light winds becoming northwest around 5 mph in the afternoon. * Mixing height........900-1600 ft AGL. * Transport winds......Northwest around 5 mph. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy. * Chance of precip.....0%. * Min temperature......44-54. * Max humidity.........75-90 percent. * 20-foot winds........West winds around 4 mph in the evening becoming light. * Mixing height........400-700 ft AGL. * Transport winds......Northwest around 5 mph. .THURSDAY... * Sky/weather..........Partly sunny. * Chance of precip.....0%. * Max temperature......64-74. * Min humidity.........53-68 percent. * 20-foot winds........Light winds becoming northwest around 5 mph in the afternoon. * Mixing height........500-1400 ft AGL. * Transport winds......North around 5 mph. .FRIDAY...Mostly clear. Lows in the lower 50s. Highs 66 to 76. Northwest winds 3 to 5 mph. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs 65 to 75. West winds around 3 mph. .SUNDAY...Mostly cloudy. Slight chance of rain. Lows around 50. Highs 60 to 70. Southwest winds around 5 mph. .MEMORIAL DAY...Mostly cloudy with a chance of rain. Lows in the upper 40s. Highs 55 to 65. .TUESDAY...Partly cloudy. Slight chance of rain. Lows 41 to 51. Highs 58 to 68. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ654-201100- Central and South Puget Sound Lowlands- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. Patchy fog after midnight. * Chance of precip.....0%. * Min temperature......44-54. * Max humidity.........84-99 percent. * 20-foot winds........North winds around 4 mph in the evening becoming light. * Mixing height........500-1300 ft AGL. * Transport winds......North around 5 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. Patchy fog in the morning. * Chance of precip.....0%. * Max temperature......60-70. * Min humidity.........60-75 percent. * 20-foot winds........Light winds becoming north around 4 mph in the afternoon. * Mixing height........1200 ft AGL increasing to 3400 ft AGL in the afternoon. * Transport winds......North around 5 mph. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy then becoming partly cloudy. * Chance of precip.....0%. * Min temperature......43-53. * Max humidity.........74-89 percent. * 20-foot winds........North winds around 3 mph in the evening becoming light. * Mixing height........600-1600 ft AGL. * Transport winds......North around 5 mph. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......66-76. * Min humidity.........54-69 percent. * 20-foot winds........Light winds becoming northeast around 4 mph in the afternoon. * Mixing height........700 ft AGL increasing to 3000 ft AGL in the afternoon. * Transport winds......North around 5 mph. .FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 70s. West winds 3 to 4 mph. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 70s. Southwest winds around 3 mph. .SUNDAY...Mostly cloudy. Lows around 50. Highs in the upper 60s. Southwest winds around 4 mph. .MEMORIAL DAY...Mostly cloudy. Chance of rain. Lows in the upper 40s. Highs around 60. .TUESDAY...Partly cloudy. Slight chance of rain. Lows in the mid 40s. Highs in the mid 60s. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ655-201100- Black Hills and Southwest Interior Lowlands- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. Patchy fog after midnight. * Chance of precip.....0%. * Min temperature......43-53. * Max humidity.........84-99 percent. * 20-foot winds........West winds 3 to 6 mph. * Mixing height........700-1700 ft AGL. * Transport winds......West 5 to 10 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......63-73. * Min humidity.........54-69 percent. * 20-foot winds........Light winds becoming north around 4 mph in the afternoon. * Mixing height........1300 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds......North 5 to 10 mph. .WEDNESDAY NIGHT... * Sky/weather..........Mostly cloudy then becoming partly cloudy. Patchy fog after midnight. * Chance of precip.....0%. * Min temperature......42-52. * Max humidity.........78-93 percent. * 20-foot winds........Northwest winds around 4 mph in the evening becoming light. * Mixing height........700-1700 ft AGL. * Transport winds......North 5 to 10 mph. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......71-81. * Min humidity.........39-54 percent. * 20-foot winds........Light winds becoming north around 4 mph in the afternoon. * Mixing height........600 ft AGL increasing to 3200 ft AGL in the afternoon. * Transport winds......North around 5 mph. .FRIDAY...Mostly clear. Lows around 50. Highs in the mid 70s. Northwest winds 3 to 5 mph. .SATURDAY...Partly cloudy. Lows around 50. Highs in the mid 70s. West winds around 3 mph. .SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 60s. West winds around 4 mph. .MEMORIAL DAY...Mostly cloudy with a chance of rain. Lows in the mid 40s. Highs 55 to 65. .TUESDAY...Partly cloudy. Slight chance of rain. Lows in the lower 40s. Highs 61 to 71. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ656-201100- Northeast Puget Sound Lowlands Generally Below 1500 Feet- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. Patchy fog after midnight. * Chance of precip.....0%. * Min temperature......41-51. * Max humidity.........80-95 percent. * 20-foot winds........West winds around 4 mph in the evening becoming light. * Mixing height........400-1400 ft AGL. * Transport winds......West around 5 mph shifting to the north after midnight. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......60-70. * Min humidity.........54-69 percent. * 20-foot winds........Light winds becoming west around 5 mph in the afternoon. * Mixing height........1100 ft AGL increasing to 3100 ft AGL in the afternoon. * Transport winds......Northwest around 5 mph. .WEDNESDAY NIGHT... * Sky/weather..........Partly cloudy. * Chance of precip.....0%. * Min temperature......42-52. * Max humidity.........77-92 percent. * 20-foot winds........West winds around 4 mph in the evening becoming light. * Mixing height........400-1400 ft AGL. * Transport winds......Northwest around 5 mph shifting to the northeast after midnight. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......65-75. * Min humidity.........41-56 percent. * 20-foot winds........Light winds becoming west around 5 mph in the afternoon. * Mixing height........500 ft AGL increasing to 3000 ft AGL in the afternoon. * Transport winds......East around 5 mph shifting to the west in the afternoon. .FRIDAY...Mostly clear. Lows around 50. Highs 69 to 79. West winds up to 5 mph. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs 67 to 77. Southwest winds around 3 mph. .SUNDAY...Mostly cloudy. Slight chance of rain. Lows around 50. Highs 62 to 72. Southwest winds around 3 mph. .MEMORIAL DAY...Mostly cloudy with rain likely. Lows in the upper 40s. Highs 53 to 63. .TUESDAY...Partly cloudy. Chance of rain. Lows in the mid 40s. Highs in the lower 60s. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ657-201100- Southeast Puget Sound Lowlands Generally Below 1500 Feet- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. Slight chance of rain in the evening. Patchy fog after midnight. * Chance of precip.....20% decreasing to 10% after midnight. * Min temperature......43-53. * Max humidity.........84-99 percent. * 20-foot winds........North winds up to 3 mph. * Mixing height........600-1500 ft AGL. * Transport winds......Northwest around 5 mph. .WEDNESDAY... * Sky/weather..........Partly sunny. Patchy fog in the morning. * Chance of precip.....0%. * Max temperature......60-70. * Min humidity.........53-68 percent. * 20-foot winds........Light winds becoming north around 4 mph in the afternoon. * Mixing height........1200 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds......North 5 to 10 mph. .WEDNESDAY NIGHT... * Sky/weather..........Partly cloudy. * Chance of precip.....0%. * Min temperature......42-52. * Max humidity.........82-97 percent. * 20-foot winds........North winds around 3 mph in the evening becoming light. * Mixing height........600-1600 ft AGL. * Transport winds......North around 5 mph. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......68-78. * Min humidity.........43-58 percent. * 20-foot winds........Light winds becoming northwest around 4 mph in the afternoon. * Mixing height........600 ft AGL increasing to 2700 ft AGL in the afternoon. * Transport winds......Northeast around 5 mph shifting to the northwest in the afternoon. .FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 70s. Northwest winds up to 4 mph. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the mid 70s. Light winds. .SUNDAY...Mostly cloudy. Lows 45 to 55. Highs in the upper 60s. Southwest winds around 3 mph. .MEMORIAL DAY...Cooler. Mostly cloudy with rain likely. Lows in the upper 40s. Highs in the upper 50s. .TUESDAY...Partly cloudy. Chance of rain. Lows in the mid 40s. Highs in the mid 60s. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ658-201100- West Slopes of the North Cascades Generally above 1500 Feet- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. * Chance of precip.....0%. * Min temperature......39-49...except 34-44 ridges. * Max humidity.........79-94 percent. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 1 to 4 mph. * Ridges/upr slopes...West winds around 6 mph in the evening becoming light. * Snow level...........6000 feet. * Mixing height........500-1200 ft AGL. * Transport winds......Northwest 5 to 10 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......60-70...except 53-63 ridges. * Min humidity.........50-65 percent. * 20-foot winds........ * Valleys/lwr slopes..Light winds becoming west around 6 mph in the afternoon. * Ridges/upr slopes...Northwest winds 3 to 8 mph. * Snow level...........6500 feet. * Mixing height........1100 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds......North 5 to 10 mph. .WEDNESDAY NIGHT... * Sky/weather..........Partly cloudy. * Chance of precip.....0%. * Min temperature......39-49...except 34-44 ridges. * Max humidity.........72-87 percent. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 3 to 4 mph. * Ridges/upr slopes...Northwest winds around 6 mph shifting to the northeast around 5 mph after midnight. * Snow level...........7500 feet. * Mixing height........500-1500 ft AGL. * Transport winds......Northwest around 10 mph shifting to the northeast after midnight. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......65-75...except 57-67 ridges. * Min humidity.........38-53 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...Northeast winds around 4 mph shifting to the west around 7 mph in the afternoon. * Snow level...........7000 feet. * Mixing height........500 ft AGL increasing to 5000 ft AGL in the afternoon. * Transport winds......East around 5 mph shifting to the west in the afternoon. .FRIDAY...Mostly clear. Snow level 7500 feet. Lows 41 to 51. Highs 64 to 74 valleys...57 to 67 ridges. West winds 3 to 8 mph. .SATURDAY...Partly cloudy. Snow level 8000 feet. Lows 42 to 52. Highs 58 to 68. West winds around 5 mph. .SUNDAY...Mostly cloudy. Slight chance of rain. Snow level 7000 feet. Lows 39 to 49. Highs 53 to 63. Southwest winds around 6 mph. .MEMORIAL DAY...Cooler. Mostly cloudy with rain and snow likely. Snow level 5500 feet. Lows 37 to 47. Highs 48 to 58 valleys...40 to 50 ridges. .TUESDAY...Mostly cloudy. Chance of rain and snow. Snow level 5500 feet. Lows 33 to 43. Highs 53 to 63 valleys...45 to 55 ridges. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ WAZ659-201100- West Slopes of the Central Cascades Generally above 1500 Feet- 330 PM PDT Tue May 19 2026 .Tonight... * Sky/weather..........Mostly cloudy. Slight chance of rain in the evening. * Chance of precip.....10%. * Min temperature......38-48. * Max humidity.........81-96 percent. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 1 to 4 mph. * Ridges/upr slopes...Northwest winds 3 to 7 mph. * Snow level...........6500 feet. * Mixing height........700-1500 ft AGL. * Transport winds......Northwest 5 to 10 mph. .WEDNESDAY... * Sky/weather..........Mostly sunny. Patchy dense fog in the morning. * Chance of precip.....0%. * Max temperature......58-68...except 51-61 ridges. * Min humidity.........58-73 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...Northwest winds 3 to 8 mph. * Snow level...........6500 feet. * Mixing height........1600-2600 ft AGL. * Transport winds......North 5 to 10 mph. .WEDNESDAY NIGHT... * Sky/weather..........Partly cloudy. * Chance of precip.....0%. * Min temperature......37-47. * Max humidity.........75-90 percent...except 67-82 percent ridges. * 20-foot winds........ * Valleys/lwr slopes..Downslope/downvalley 2 to 4 mph. * Ridges/upr slopes...Northwest winds around 6 mph shifting to the east around 4 mph after midnight. * Snow level...........7000 feet. * Mixing height........500-1500 ft AGL. * Transport winds......North around 10 mph shifting to the northeast after midnight. .THURSDAY... * Sky/weather..........Mostly sunny. * Chance of precip.....0%. * Max temperature......66-76...except 57-67 ridges. * Min humidity.........39-54 percent. * 20-foot winds........ * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...East winds around 4 mph shifting to the northwest around 6 mph in the afternoon. * Snow level...........7500 feet. * Mixing height........600 ft AGL increasing to 4800 ft AGL in the afternoon. * Transport winds......East around 5 mph shifting to the northwest in the afternoon. .FRIDAY...Mostly clear. Snow level 8000 feet. Lows 42 to 52. Highs 65 to 75 valleys...58 to 68 ridges. Northwest winds 3 to 7 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Snow level 7500 feet. Lows 42 to 52. Highs 59 to 69. West winds 3 to 4 mph. .MEMORIAL DAY...Cooler. Mostly cloudy with rain and snow likely. Snow level 6000 feet. Lows 38 to 48. Highs 45 to 55. .TUESDAY...Mostly cloudy. Chance of rain and snow. Snow level 5500 feet. Lows 34 to 44. Highs 54 to 64 valleys...47 to 57 ridges. .8 TO 14 day Outlook for May 27 - Jun 02, 2026 Near normal temperatures and near normal precipitation. $$ www.weather.gov/seattle