FNUS56 KSEW 222037 FWFSEW Fire Weather Planning Forecast for Western Washington National Weather Service Seattle WA 137 PM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONE 658... ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONE 659... .DISCUSSION...Scattered showers and thunderstorms have been observed so far today. Coverage has decreased into the afternoon but additional storms are slated to develop, primarily for the North Cascades. As a result, Red Flag Warnings remain for the Cascades but should be allowed to expire this evening as conditions trend drier. Upper level ridge building in later Sunday. Brief low-level offshore flow possible on Monday as thermal trough builds along the coast before pushing inland overnight into Tuesday. Another upper level trough arriving in the middle of next week increasing the chances for more showers and the potential for thunderstorms. Upper-troughing may linger into Friday. Forecast for 20 foot wind speed (valleys and ridge tops) are 10 minute averages reflecting RAWS winds. WAZ649-231115- North and Central Coastal Strip- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers. * Min temperature.......52-62. * Max humidity..........95-100 percent. * 20-foot winds......... * Valleys/lwr slopes..South winds around 4 mph in the evening becoming light. * Ridges/upr slopes...South winds around 3 mph in the evening becoming light. * Mixing height.........500-900 ft AGL. * Transport winds.......South around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......58-68. * Min humidity..........79-94 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 4 mph in the afternoon. * Mixing height.........500-1400 ft AGL. * Transport winds.......Southwest around 5 mph shifting to the northwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy then becoming partly cloudy. * Min temperature.......Around 55. * Max humidity..........94-100 percent. * 20-foot winds......... * Valleys/lwr slopes..Northwest winds 4 to 7 mph. * Ridges/upr slopes...Northwest winds 4 to 7 mph. * Mixing height.........400-900 ft AGL. * Transport winds.......North 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......64-74. * Min humidity..........68-83 percent. * 20-foot winds......... * Valleys/lwr slopes..North winds 3 to 6 mph. * Ridges/upr slopes...North winds 3 to 6 mph. * Mixing height.........400-1200 ft AGL. * Transport winds.......North 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Partly cloudy. Lows in the mid 50s. North winds 3 to 7 mph. .TUESDAY...Mostly sunny. Highs 65 to 75. Light winds becoming southwest around 5 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the upper 50s. Southwest winds around 4 mph. .WEDNESDAY...Mostly cloudy with a chance of rain. Highs in the mid 60s. South winds around 6 mph. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the mid 50s. South winds around 4 mph. .THURSDAY...Partly sunny. Slight chance of rain in the morning. Highs in the mid 60s. South winds around 4 mph. .FRIDAY...Mostly cloudy. Lows in the lower50s. Highs 60 to 70. .SATURDAY...Mostly cloudy. Lows in the lower 50s. Highs in the mid 60s. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ650-231115- North Coastal Lowlands- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers. * Min temperature.......50-60. * Max humidity..........81-96 percent. * 20-foot winds......... * Valleys/lwr slopes..South winds up to 3 mph. * Ridges/upr slopes...Southwest winds around 3 mph in the evening becoming light. * Mixing height.........400-1100 ft AGL. * Transport winds.......South around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......61-71. * Min humidity..........74-89 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming west around 3 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 4 mph in the afternoon. * Mixing height.........800-1800 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......48-58. * Max humidity..........81-96 percent. * 20-foot winds......... * Valleys/lwr slopes..Northwest winds around 4 mph in the evening becoming light. * Ridges/upr slopes...Northwest winds 3 to 5 mph. * Mixing height.........400-1200 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......69-79. * Min humidity..........61-76 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming northwest around 4 mph in the afternoon. * Ridges/upr slopes...North winds 3 to 5 mph. * Mixing height.........700-1700 ft AGL. * Transport winds.......Northeast around 5 mph shifting to the northwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows 53 to 63. Northwest winds around 4 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs 72 to 82. Light winds becoming southwest around 3 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 50s. Southwest winds around 4 mph. .WEDNESDAY...Cooler. Mostly cloudy with a chance of rain. Highs in the mid 60s. Southwest winds around 4 mph. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the lower 50s. Southwest winds around 3 mph. .THURSDAY...Partly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Highs in the mid 60s. Southwest winds around 3 mph. .FRIDAY...Partly cloudy. Lows in the lower 50s. Highs 62 to 72. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs 62 to 72. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ651-231115- Central Coastal Lowlands- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers in the evening. Chance of showers after midnight. * Min temperature.......51-61. * Max humidity..........86-100 percent. * 20-foot winds......... * Valleys/lwr slopes..West winds around 3 mph in the evening becoming light. * Ridges/upr slopes...West winds up to 3 mph. * Mixing height.........500-1500 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......63-73. *Min humidity..........67-82 percent...except 76-86 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 3 mph in the afternoon. * Mixing height.........800 ft AGL increasing to 2800 ft AGL in the afternoon. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......Around 54. * Max humidity..........82-97 percent. * 20-foot winds......... * Valleys/lwr slopes..Northwest winds around 4 mph in the evening becoming light. * Ridges/upr slopes...Northwest winds around 4 mph shifting to the north around 3 mph after midnight. * Mixing height.........500-1500 ft AGL. * Transport winds.......Northwest around 5 mph shifting to the north after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......74-84...except 71-81 ridges. * Min humidity..........49-64 percent...except 57-67 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming north around 3 mph in the afternoon. * Ridges/upr slopes...Light winds. * Mixing height.........400 ft AGL increasing to 2500 ft AGL in the afternoon. * Transport winds.......Northeast around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows 53 to 63. Northwest winds around 3 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs 74 to 84. Light winds becoming southwest around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the upper 50s. Southwest winds around 5 mph. .WEDNESDAY...Mostly cloudy with slight chance of rain. Highs 64 to 74 valleys...in the lower 60s ridges. Southwest winds around 5 mph. .WEDNESDAY NIGHT...Mostly cloudy with slight chance of rain. Lows in the mid 50s. Southwest winds around 4 mph. .THURSDAY...Mostly cloudy with slight chance of rain. Highs 64 to 74 valleys...in the lower 60s ridges. Southwest winds around 4 mph. .FRIDAY...Mostly cloudy. Lows in the lower 50s. Highs 65 to 75 valleys...in the lower 60s ridges. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs 65 to 75 valleys...in the mid 60s ridges. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ652-231115- West Portion of the Olympic Mountains- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers in the evening. * Min temperature.......45-55. * Max humidity..........78-93 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 1 to 3 mph. * Ridges/upr slopes...Southwest winds around 3 mph in the evening becoming light. * Mixing height.........500-1100 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...6 percent. * Freezing level........11000 Feet. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......60-70...except 56-66 ridges. * Min humidity..........66-81 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 1 to 3 mph. * Ridges/upr slopes...Light winds becoming west around 4 mph in the afternoon. * Mixing height.........1000-2000 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. * Freezing level........11500 Feet. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......45-55. * Max humidity..........75-90 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 3 mph. * Ridges/upr slopes...Northwest winds around 3 mph shifting to the northeast after midnight. * Mixing height.........300-1200 ft AGL. * Transport winds.......North around 5 mph shifting to the northeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13000 Feet. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......71-81...except 66-76 ridges. * Min humidity..........48-63 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley around 3 mph. * Ridges/upr slopes...Northeast winds around 5 mph shifting to the west around 4 mph in the afternoon. * Mixing height.........300 ft AGL increasing to 2700 ft AGL in the afternoon. * Transport winds.......Northeast around 5 mph shifting to the west in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13000 Feet. .MONDAY NIGHT...Mostly clear. Freezing level 13500 feet. Lows in the upper 50s. Light winds becoming northeast around 3 mph after midnight. .TUESDAY...Sunny. Freezing level 13500 feet. Highs 70 to 80. Light winds becoming southwest around 4 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Freezing level 13500 feet. Lows in the mid 50s. Southwest winds around 4 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. Freezing level 12000 feet. Highs 56 to 66. Southwest winds around 5 mph. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain. Freezing level 11000 feet. Lows 46 to 56. Southwest winds around 4 mph. .THURSDAY...Partly sunny with a chance of rain. Freezing level 9000 feet. Highs 57 to 67 valleys...52 to 62 ridges. Southwest winds around 4 mph. .FRIDAY...Partly cloudy. Slight chance of rain. Freezing level 10500 feet. Lows in the upper 40s. Highs 56 to 66. .SATURDAY...Partly cloudy. Freezing level 10500 feet. Lows in the upper 40s. Highs 57 to 67. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ661-231115- East Portion of the Olympic Mountains- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Partly cloudy then becoming mostly cloudy. Slight chance of showers in the evening. Slight chance of rain after midnight. * Min temperature.......47-57...except 44-54 ridges. * Max humidity..........79-94 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 2 to 4 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........400-1100 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........5 percent. * Chance of Lightning...8 percent. * Freezing level........11000 Feet. .SUNDAY... * Sky/weather...........Mostly sunny. * Max temperature.......62-72...except 56-66 ridges. * Min humidity..........65-80 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1200-2200 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. * Freezing level........11500 Feet. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......47-57...except 44-54 ridges. * Max humidity..........79-94 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 3 mph. * Ridges/upr slopes...North winds 3 to 5 mph. * Mixing height.........400-1100 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent.* Chance of Lightning...0 percent. * Freezing level........13000 Feet. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......70-80...except 65-75 ridges. * Min humidity..........47-62 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 3 to 4 mph. * Ridges/upr slopes...Northeast winds 3 to 6 mph. * Mixing height.........400 ft AGL increasing to 2500 ft AGL in the afternoon. * Transport winds.......Northeast around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13500 Feet. .MONDAY NIGHT...Mostly clear. Freezing level 13500 feet. Lows in the upper 50s. North winds 3 to 5 mph. .TUESDAY...Sunny. Freezing level 13500 feet. Highs 73 to 83 valleys...66 to 76 ridges. Light winds becoming south around 4 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Freezing level 13500 feet. Lows 49 to 59. West winds around 4 mph. .WEDNESDAY...Mostly sunny. Chance of rain in the afternoon. Freezing level 12500 feet. Highs 61 to 71 valleys...54 to 64 ridges. Southwest winds around 6 mph. .WEDNESDAY NIGHT...Colder. Mostly cloudy with a chance of rain. Freezing level 11000 feet. Lows in the lower 50s valleys...42 to 52 ridges. Southwest winds around 5 mph. .THURSDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. Freezing level 9500 feet. Highs 59 to 69 valleys...51 to 61 ridges. Southwest winds around 4 mph. .FRIDAY...Partly cloudy. Slight chance of rain. Freezing level 10500 feet. Lows 42 to 52. Highs 60 to 70 valleys...52 to 62 ridges. .SATURDAY...Partly cloudy. Slight chance of rain. Freezing level 10500 feet. Lows around 50 valleys...40 to 50 ridges. Highs 60 to 70 valleys...53 to 63 ridges. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ653-231115- Strait of Juan De Fuca and Northwest Interior Lowlands- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Chance of showers in the evening. Chance of rain after midnight. * Min temperature.......49-59. * Max humidity..........81-96 percent. * 20-foot winds.........West winds around 5 mph shifting to the south around 3 mph after midnight. * Mixing height.........400-600 ft AGL. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........5 percent. * Chance of Lightning...11 percent. .SUNDAY... * Sky/weather...........Partly sunny. Slight chance of rain in the morning. * Max temperature.......65-75. * Min humidity..........65-80 percent. * 20-foot winds.........Southwest winds 3 to 6 mph. * Mixing height.........600-1300 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......48-58. * Max humidity..........82-97 percent. * 20-foot winds.........West winds 3 to 5 mph. * Mixing height.........400-700 ft AGL. * Transport winds.......Northwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......68-78. * Min humidity..........59-74 percent. * 20-foot winds.........North winds 3 to 6 mph. * Mixing height.........400-1200 ft AGL. * Transport winds.......North 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Northwest winds around 4 mph in the evening becoming light. .TUESDAY...Warmer, sunny. Highs 74 to 84. Light winds becoming northwest around 3 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 51 to 61. Southwest winds around 6 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. Highs 66 to 76. Southwest winds around 8 mph. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain. Lows 49 to 59. Southwest winds around 5 mph. .THURSDAY...Partly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Highs 63 to 73. Southwest winds around 5 mph. .FRIDAY...Partly cloudy. Slight chance of rain. Lows 47 to 57. Highs 63 to 73. .SATURDAY...Partly cloudy. Slight chance of rain. Lows 47 to 57. Highs 63 to 73. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ654-231115- Central and South Puget Sound Lowlands- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers in the evening. * Min temperature.......51-61. * Max humidity..........82-97 percent. * 20-foot winds.........Southwest winds 3 to 7 mph. * Mixing height.........700-1700 ft AGL. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......65-75. * Min humidity..........61-76 percent. * 20-foot winds.........Southwest winds 3 to 6 mph. * Mixing height.........1200 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......49-59. * Max humidity..........80-95 percent. * 20-foot winds.........North winds 4 to 7 mph. * Mixing height.........700-1700 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......70-80. * Min humidity..........52-67 percent. * 20-foot winds.........Northeast winds 5 to 9 mph. * Mixing height.........1000-2000 ft AGL. * Transport winds.......Northeast around 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds 3 to 7 mph. .TUESDAY...Warmer, sunny. Highs 79 to 89. Light winds becoming north around 3 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 50s. Southwest winds around 9 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the afternoon. Highs 69 to 79. Southwest winds around 10 mph. .WEDNESDAY NIGHT...Partly cloudy with slight chance of rain. Lows in the mid 50s. Southwest winds around 7 mph. .THURSDAY...Partly sunny with slight chance of rain. Highs 67 to 77. Southwest winds around 6 mph. .FRIDAY...Partly cloudy. Lows 47 to 57. Highs 67 to 77. .SATURDAY...Partly cloudy. Lows 47 to 57. Highs 68 to 78. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ655-231115- Black Hills and Southwest Interior Lowlands- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers. * Min temperature.......51-61. * Max humidity..........85-100 percent. * 20-foot winds.........West winds around 3 mph in the evening becoming light. * Mixing height.........900-1900 ft AGL. * Transport winds.......West 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......66-76. * Min humidity..........61-76 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1100 ft AGL increasing to 3500 ft AGL in the afternoon. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......48-58. * Max humidity..........80-95 percent. * 20-foot winds.........North winds 3 to 5 mph. * Mixing height.........700-1700 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......79-89. * Min humidity..........38-53 percent. * 20-foot winds.........Northeast winds 3 to 6 mph. * Mixing height.........500 ft AGL increasing to 2600 ft AGL in the afternoon. * Transport winds.......Northeast 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds around 3 mph in the evening becoming light. .TUESDAY...Sunny. Highs in the mid 80s. Light winds. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 50s. West winds around 6 mph. .WEDNESDAY...Mostly cloudy. Highs 70 to 80. Southwest winds around 5 mph. .WEDNESDAY NIGHT...Partly cloudy. Slight chance of rain after midnight. Lows in the lower 50s. West winds around 4 mph. .THURSDAY...Partly sunny with slight chance of rain. Highs in the lower 70s. Southwest winds around 3 mph. .FRIDAY...Partly cloudy. Lows around 50. Highs in the mid 70s. .SATURDAY...Partly cloudy. Lows around 50. Highs in the mid 70s. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ656-231115- Northeast Puget Sound Lowlands Generally Below 1500 Feet- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Chance of showers. * Min temperature.......47-57. * Max humidity..........85-100 percent. * 20-foot winds.........Southwest winds around 3 mph in the evening becoming light. * Mixing height.........600-1400 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........5 percent. * Chance of Lightning...12 percent. .SUNDAY... * Sky/weather...........Partly sunny. Chance of rain in the morning. Slight chance of rain in the afternoon. * Max temperature.......61-71. * Min humidity..........64-79 percent. * 20-foot winds.........South winds around 3 mph in the morning becoming light. * Mixing height.........1200-2200 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........5 percent. * Chance of Lightning...7 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......47-57. * Max humidity..........77-92 percent. * 20-foot winds.........Light winds. * Mixing height.........400-1400 ft AGL. * Transport winds.......Northwest around 5 mph shifting to the northeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......72-82. * Min humidity..........46-61 percent. * 20-foot winds.........Light winds becoming northwest around 4 mph in the afternoon. * Mixing height.........800-1800 ft AGL. * Transport winds.......Northeast around 5 mph shifting to the northwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows 53 to 63. Northwest winds around 3 mph in the evening becoming light. .TUESDAY...Warmer, sunny. Highs 80 to 90. Light winds becoming west around 3 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 50s. Southwest winds around 3 mph. .WEDNESDAY...Partly sunny. Highs 70 to 80. Southwest winds around 5 mph. .WEDNESDAY NIGHT...Partly cloudy with a chance of rain. Lows in the mid 50s. Southwest windsaround 3 mph. .THURSDAY...Partly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Highs 66 to 76. South winds around 3 mph. .FRIDAY...Partly cloudy. Slight chance of rain. Lows in the lower 50s. Highs 67 to 77. .SATURDAY...Partly cloudy. Lows in the lower 50s. Highs 67 to 77. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ657-231115- Southeast Puget Sound Lowlands Generally Below 1500 Feet- 137 PM PDT Sat Aug 22 2026 .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers in the evening. Chance of rain after midnight. * Min temperature.......51-61. * Max humidity..........85-100 percent. * 20-foot winds.........West winds around 3 mph in the evening becoming light. * Mixing height.........1200-2200 ft AGL. * Transport winds.......West 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SUNDAY... * Sky/weather...........Partly sunny. Slight chance of rain in the morning. * Max temperature.......66-76. * Min humidity..........57-72 percent. * 20-foot winds.........Southwest winds 3 to 4 mph. * Mixing height.........1300 ft AGL increasing to 3700 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......49-59. * Max humidity..........78-93 percent. * 20-foot winds.........North winds 3 to 4 mph. * Mixing height.........700-1700 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly sunny. * Max temperature.......76-86. * Min humidity..........45-60 percent. * 20-foot winds.........Light winds becoming north around 5 mph in the afternoon. * Mixing height.........900-1900 ft AGL. * Transport winds.......North 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds around 4 mph in the evening becoming light. .TUESDAY...Sunny. Highs in the mid 80s. Light winds. .TUESDAY NIGHT...Partly cloudy. Slight chance of rain after midnight. Lows 53 to 63. Southwest winds around 3 mph. .WEDNESDAY...Not as warm. Partly sunny. Highs in the mid 70s. Southwest winds around 4 mph. .WEDNESDAY NIGHT...Partly cloudy with slight chance of rain. Lows 51 to 61. Southwest winds around 3 mph. .THURSDAY...Partly sunny with slight chance of rain. Highs in the lower 70s. Southwest winds around 3 mph. .FRIDAY...Partly cloudy. Lows 48 to 58. Highs in the mid 70s. .SATURDAY...Partly cloudy. Lows 48 to 58. Highs in the mid 70s. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ658-231115- West Slopes of the North Cascades Generally above 1500 Feet- 137 PM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING... .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of thunderstorms in the evening. Chance of showers through the night. * Min temperature.......48-58...except 42-52 ridges. * Max humidity..........82-97 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 3 to 5 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........800-1300 ft AGL. * Transport winds.......Southwest around 10 mph. * CWR (>0.25)...........10 percent. * Chance of Lightning...20 percent. * Freezing level........11500 Feet. .SUNDAY... * Sky/weather...........Partly sunny. Chance of rain through the day. * Max temperature.......59-69...except 54-64 ridges. * Min humidity..........70-85 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 3 to 4 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........1000-1800 ft AGL. * Transport winds.......West around 10 mph. * CWR (>0.25)...........10 percent. * Chance of Lightning...9 percent. * Freezing level........10500 Feet. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy then becoming partly cloudy. * Min temperature.......46-56...except 41-51 ridges. * Max humidity..........76-91 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 3 mph. * Ridges/upr slopes...Northwest winds around 4 mph shifting to the northeast around 5 mph after midnight. * Mixing height.........200-1200 ft AGL. * Transport winds.......Northwest around 5 mph shifting to the northeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13000 Feet. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......72-82...except 68-78 ridges. * Min humidity..........45-60 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 3 to 4 mph. * Ridges/upr slopes...East winds around 6 mph shifting to the southwest around 3 mph in the afternoon. * Mixing height.........300 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds.......East around 5 mph shifting to the south in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13000 Feet. .MONDAY NIGHT...Mostly clear. Freezing level 13500 feet. Lows 51 to 61. Northwest winds around 3 mph shifting to the east around 6 mph after midnight. .TUESDAY...Sunny. Freezing level 13500 feet. Highs 76 to 86 valleys...70 to 80 ridges. East winds around 6 mph shifting to the southwest around 4 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Freezing level 13500 feet. Lows 51 to 61. Southwest winds around 3 mph. .WEDNESDAY...Mostly sunny. Slight chance of rain in the afternoon. Freezing level 13000 feet. Highs 65 to 75 valleys...58 to 68 ridges. Southwest winds around 6 mph. .WEDNESDAY NIGHT...Colder. Partly cloudy. Slight chance of rain in the evening, then chance of rain after midnight. Freezing level 12000 feet. Lows in the lower 50s valleys...in the upper 40s ridges. Southwest winds around 6 mph. .THURSDAY...Partly sunny with a chance of rain. Freezing level 10500 feet. Highs 60 to 70 valleys...52 to 62 ridges. Southwest winds around 6 mph. .FRIDAY...Partly cloudy. Freezing level 10500 feet. Lows in the upper 40s valleys...in the mid 40s ridges. Highs 61 to 71 valleys... 54 to 64 ridges. .SATURDAY...Partly cloudy. Freezing level 11000 feet. Lows in the upper 40s valleys...in the mid 40s ridges. Highs 62 to 72 valleys... 54 to 64 ridges. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ WAZ659-231115- West Slopes of the Central Cascades Generally above 1500 Feet- 137 PM PDT Sat Aug 22 2026 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... .TONIGHT... * Sky/weather...........Mostly cloudy. Slight chance of showers in the evening, then chance of showers after midnight. * Min temperature.......49-59...except 41-51 ridges. * Max humidity..........78-93 percent...except 87-100 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 2 to 4 mph. * Ridges/upr slopes...West winds 5 to 8 mph. * Mixing height.........900-1900 ft AGL. * Transport winds.......West 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. * Freezing level........11500 Feet. .SUNDAY... * Sky/weather...........Partly sunny. Chance of rain in the morning. * Max temperature.......64-74...except 54-64 ridges. * Min humidity..........63-78 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley around 3 mph. * Ridges/upr slopes...West winds 3 to 6 mph. * Mixing height.........1400-2400 ft AGL. * Transport winds.......West around 10 mph. * CWR (>0.25)...........5 percent. * Chance of Lightning...4 percent. * Freezing level........12000 Feet. .SUNDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......47-57...except 43-53 ridges. * Max humidity..........64-79 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 3 mph. * Ridges/upr slopes...Northwest winds around 4 mph shifting to the east after midnight. * Mixing height.........400-1400 ft AGL. * Transport winds.......North around 5 mph shifting to the northeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13500 Feet. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......76-86...except 69-79 ridges. * Min humidity..........43-58 percent...except 37-52 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley around 3 mph. * Ridges/upr slopes...East winds around 5 mph shifting to the north around 3 mph in the afternoon. * Mixing height.........300 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds.......East around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13500 Feet. .MONDAY NIGHT...Mostly clear. Freezing level 14000 feet. Lows 53 to 63. North winds around 3 mph shifting to the east around 6 mph after midnight. .TUESDAY...Sunny. Freezing level 13500 feet. Highs 78 to 88 valleys...71 to 81 ridges. East winds around 5 mph shifting to the west around 3 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Freezing level 14000 feet. Lows 50 to 60. West winds around 3 mph. .WEDNESDAY...Mostly sunny. Freezing level 13500 feet. Highs 66 to 76 valleys...58 to 68 ridges. West winds around 4 mph. .WEDNESDAY NIGHT...Cooler. Partly cloudy with slight chance of rain. Freezing level 13000 feet. Lows 48 to 58 valleys...in the upper 40s ridges. West winds around 5 mph. .THURSDAY...Mostly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Freezing level 11500 feet. Highs 63 to 73 valleys...53 to 63 ridges. West winds around 5 mph. .FRIDAY...Partly cloudy. Freezing level 12000 feet. Lows 45 to 55 valleys...in the mid 40s ridges. Highs 64 to 74 valleys...55 to 65 ridges. .SATURDAY...Partly cloudy. Freezing level 11500 feet. Lows 45 to 55 valleys...in the mid 40s ridges. Highs 64 to 74 valleys...55 to 65 ridges. .8 TO 14 Day Outlook for western Washington. Near normal temperatures and above normal precipitation. $$ www.weather.gov/seattle