


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
568 FNUS56 KSEW 171458 FWFSEW Fire Weather Planning Forecast for Western Washington National Weather Service Seattle WA 758 AM PDT Sun Aug 17 2025 .DISCUSSION...Scattered showers will continue to taper off today. Cooler and cloudier conditions through Tuesday, with a warming and drying trend for the latter half of the week with minimum relative humidity values dipping back below 30 percent starting Thursday. Forecast for 20 foot wind speed (valleys and ridge tops) are 10 minute averages reflecting RAWS winds. WAZ649-172315- North and Central Coastal Strip- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Patchy fog in the morning. Slight chance of rain in the morning. * Max temperature.......59-69. * Min humidity..........69-84 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming southwest around 5 mph in the afternoon. * Ridges/upr slopes...South winds 3 to 5 mph. * Mixing height.........700-1600 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...6 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......50-60. * Max humidity..........89-near 100 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds. * Ridges/upr slopes...Light winds. * Mixing height.........400-700 ft AGL. * Transport winds.......West around 5 mph shifting to the south after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. * Max temperature.......60-70. * Min humidity..........71-86 percent. * 20-foot winds......... * Valleys/lwr slopes..South winds 4 to 8 mph. * Ridges/upr slopes...South winds 4 to 8 mph. * Mixing height.........700-1700 ft AGL. * Transport winds.......South 10 to 15 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the mid 50s. South winds 4 to 7 mph. .TUESDAY...Mostly cloudy with a chance of rain. Highs 64 to 74. Southeast winds around 3 mph shifting to the southwest around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy with slight chance of rain. Lows in the mid 50s. Northwest winds around 3 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs 64 to 74. Light winds becoming northwest around 5 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. Northwest winds around 4 mph. .THURSDAY...Sunny. Highs 67 to 77. North winds around 3 mph. .FRIDAY...Mostly clear. Lows in the mid 50s. Highs 69 to 79. .SATURDAY...Mostly clear. Lows in the mid 50s. Highs 67 to 77. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ650-172315- North Coastal Lowlands- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Patchy fog in the morning. Slight chance of rain through the day. * Max temperature.......61-71...except 58-68 ridges. * Min humidity..........64-79 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming southwest around 3 mph in the afternoon. * Ridges/upr slopes...Southwest winds 3 to 5 mph. * Mixing height.........1600-2600 ft AGL. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...6 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......48-58. * Max humidity..........79-94 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds. * Ridges/upr slopes...Light winds. * Mixing height.........500-1400 ft AGL. * Transport winds.......Southwest around 5 mph shifting to the south after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. * Max temperature.......60-70. * Min humidity..........65-80 percent. * 20-foot winds......... * Valleys/lwr slopes..South winds 3 to 6 mph. * Ridges/upr slopes...South winds 3 to 6 mph. * Mixing height.........1400-2400 ft AGL. * Transport winds.......South 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the mid 50s. South winds 3 to 5 mph. .TUESDAY...Mostly cloudy with a chance of rain. Highs 65 to 75. Light winds becoming southwest around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening. Lows in the mid 50s. West winds around 3 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs 66 to 76. Light winds becoming west around 4 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. Light winds. .THURSDAY...Sunny. Highs 71 to 81. Light winds. .FRIDAY...Mostly clear. Lows 49 to 59. Highs 74 to 84. .SATURDAY...Mostly clear. Lows 51 to 61. Highs 72 to 82. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ651-172315- Central Coastal Lowlands- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Patchy fog in the morning. Slight chance of rain in the morning. * Max temperature.......61-71. * Min humidity..........60-75 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming west around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming southwest around 3 mph in the afternoon. * Mixing height.........1000 ft AGL increasing to 3000 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........5 percent. * Chance of Lightning...5 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......48-58. * Max humidity..........82-97 percent. * 20-foot winds......... * Valleys/lwr slopes..Southwest winds up to 3 mph. * Ridges/upr slopes...West winds up to 3 mph. * Mixing height.........500-1500 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Slight chance of rain in the afternoon. * Max temperature.......61-71. * Min humidity..........63-78 percent...except 71-86 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming southwest around 5 mph in the afternoon. * Ridges/upr slopes...Light winds becoming southwest around 5 mph in the afternoon. * Mixing height.........700 ft AGL increasing to 3100 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening. Lows in the mid 50s. Southwest winds around 4 mph in the evening becoming light. .TUESDAY...Warmer. Mostly cloudy. Highs 69 to 79 valleys...63 to 73 ridges. Light winds becoming west around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 50s. West winds around 4 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs 71 to 81 valleys...64 to 74 ridges. Light winds becoming west around 4 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. Light winds. .THURSDAY...Sunny. Highs 75 to 85 valleys...69 to 79 ridges. Light winds. .FRIDAY...Mostly clear. Lows in the lower 50s. Highs 78 to 88 valleys...73 to 83 ridges. .SATURDAY...Mostly clear. Lows 50 to 60. Highs 76 to 86 valleys... 71 to 81 ridges. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ652-172315- West Portion of the Olympic Mountains- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Slight chance of rain. * Max temperature.......59-69...except 54-64 ridges. * Min humidity..........63-78 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...Light winds becoming southwest around 4 mph in the afternoon. * Mixing height.........1400-2400 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. * Freezing level........11000 Feet. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......43-53. * Max humidity..........76-91 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 1 to 2 mph. * Ridges/upr slopes...Light winds. * Mixing height.........300-1100 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........11000 Feet. .MONDAY... * Sky/weather...........Partly sunny. Chance of rain in the afternoon. * Max temperature.......58-68...except 54-64 ridges. * Min humidity..........66-81 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 3 to 5 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........1100-2100 ft AGL. * Transport winds.......South 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. * Freezing level........10000 Feet. .MONDAY NIGHT...Mostly cloudy with slight chance of rain. Freezing level 10500 feet. Lows 47 to 57. Southwest winds around 4 mph shifting to the south around 3 mph after midnight. .TUESDAY...Warmer. Mostly cloudy with slight chance of rain. Freezing level 11000 feet. Highs 61 to 71 valleys...55 to 65 ridges. Southeast winds around 3 mph shifting to the west around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening. Freezing level 11500 feet. Lows in the lower 50s. West winds around 3 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Freezing level 11500 feet. Highs 63 to 73 valleys...57 to 67 ridges. Light winds becoming west around 4 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Freezing level 12000 feet. Lows in the lower 50s. North winds around 3 mph. .THURSDAY...Sunny. Freezing level 13000 feet. Highs 68 to 78 valleys...63 to 73 ridges. North winds around 3 mph. .FRIDAY...Clear. Freezing level 14000 feet. Lows in the mid 50s. Highs 70 to 80. .SATURDAY...Clear. Freezing level 14500 feet. Lows in the upper 50s. Highs 70 to 80. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ661-172315- East Portion of the Olympic Mountains- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Slight chance of rain. * Max temperature.......60-70...except 52-62 ridges. * Min humidity..........64-79 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...Southwest winds 3 to 5 mph. * Mixing height.........1300-2300 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...6 percent. * Freezing level........11000 Feet. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......45-55...except 42-52 ridges. * Max humidity..........78-93 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 2 to 3 mph. * Ridges/upr slopes...West winds around 3 mph in the evening becoming light. * Mixing height.........400-1100 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........11000 Feet. .MONDAY... * Sky/weather...........Partly sunny. Slight chance of rain in the afternoon. * Max temperature.......60-70...except 53-63 ridges. * Min humidity..........60-75 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........600 ft AGL increasing to 2700 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. * Freezing level........10500 Feet. .MONDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening. Freezing level 11000 feet. Lows in the lower 50s valleys...43 to 53 ridges. West winds 3 to 5 mph. .TUESDAY...Partly sunny with slight chance of rain. Freezing level 11000 feet. Highs 62 to 72 valleys...54 to 64 ridges. West winds 3 to 5 mph. .TUESDAY NIGHT...Mostly cloudy. Freezing level 11500 feet. Lows 47 to 57. West winds around 3 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Freezing level 11500 feet. Highs 63 to 73 valleys...54 to 64 ridges. West winds 3 to 5 mph. .WEDNESDAY NIGHT...Partly cloudy. Freezing level 12000 feet. Lows 45 to 55. Northwest winds around 3 mph. .THURSDAY...Sunny. Freezing level 13000 feet. Highs 67 to 77 valleys...60 to 70 ridges. North winds around 3 mph. .FRIDAY...Mostly clear. Freezing level 14000 feet. Lows 49 to 59. Highs 72 to 82 valleys...64 to 74 ridges. .SATURDAY...Clear. Freezing level 14500 feet. Lows in the mid 50s. Highs 72 to 82 valleys...64 to 74 ridges. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ653-172315- Strait of Juan De Fuca and Northwest Interior Lowlands- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Patchy fog in the morning. Slight chance of rain through the day. * Max temperature.......64-74. * Min humidity..........59-74 percent. * 20-foot winds.........South winds around 3 mph shifting to the west in the afternoon. * Mixing height.........700-1400 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...8 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......49-59. * Max humidity..........79-94 percent. * 20-foot winds.........West winds around 3 mph in the evening becoming light. * Mixing height.........500-700 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Partly sunny. Slight chance of rain in the afternoon. * Max temperature.......66-76. * Min humidity..........54-69 percent. * 20-foot winds.........South winds 3 to 6 mph. * Mixing height.........800-1800 ft AGL. * Transport winds.......South around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening. Lows 51 to 61. West winds around 4 mph in the evening becoming light. .TUESDAY...Mostly cloudy. Highs 67 to 77. Light winds becoming west around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 50s. West winds 3 to 5 mph. .WEDNESDAY...Mostly sunny. Highs 67 to 77. Light winds becoming west around 5 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. West winds around 3 mph. .THURSDAY...Sunny. Highs 69 to 79. North winds around 4 mph. .FRIDAY...Mostly clear. Lows in the mid 50s. Highs 72 to 82. .SATURDAY...Mostly clear. Lows in the mid 50s. Highs 72 to 82. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ654-172315- Central and South Puget Sound Lowlands- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. * Max temperature.......66-76. * Min humidity..........51-66 percent. * 20-foot winds.........Southwest winds 4 to 7 mph. * Mixing height.........1100 ft AGL increasing to 3500 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......51-61. * Max humidity..........79-94 percent. * 20-foot winds.........Northwest winds around 4 mph in the evening becoming light. * Mixing height.........600-1600 ft AGL. * Transport winds.......West around 5 mph shifting to the southwest after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly cloudy. * Max temperature.......65-75. * Min humidity..........50-65 percent. * 20-foot winds.........Southwest winds 4 to 7 mph. * Mixing height.........800 ft AGL increasing to 4000 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Mostly cloudy. Lows in the mid 50s. Southwest winds 3 to 7 mph. .TUESDAY...Partly sunny. Highs in the mid 70s. Light winds becoming west around 5 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 50s. North winds around 5 mph in the evening becoming light. .WEDNESDAY...Partly sunny. Highs 71 to 81. Light winds becoming northwest around 5 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds around 4 mph. .THURSDAY...Sunny. Highs 73 to 83. North winds around 4 mph. .FRIDAY...Mostly clear. Lows in the mid 50s. Highs 78 to 88. .SATURDAY...Mostly clear. Lows in the mid 50s. Highs 78 to 88. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ655-172315- Black Hills and Southwest Interior Lowlands- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. * Max temperature.......65-75. * Min humidity..........54-69 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1300 ft AGL increasing to 3800 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......48-58. * Max humidity..........81-96 percent. * 20-foot winds.........West winds around 3 mph in the evening becoming light. * Mixing height.........800-1800 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Partly sunny. * Max temperature.......65-75. * Min humidity..........55-70 percent. * 20-foot winds.........Light winds becoming southwest around 4 mph in the afternoon. * Mixing height.........900 ft AGL increasing to 4300 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. West winds around 4 mph in the evening becoming light. .TUESDAY...Partly sunny. Highs in the upper 70s. Light winds becoming northwest around 3 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 50s. Northwest winds around 4 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs in the upper 70s. Light winds becoming northwest around 4 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. Light winds. .THURSDAY...Sunny. Highs in the lower 80s. North winds around 3 mph. .FRIDAY...Mostly clear. Lows 49 to 59. Highs 82 to 92. .SATURDAY...Mostly clear. Lows 51 to 61. Highs in the mid 80s. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ656-172315- Northeast Puget Sound Lowlands Generally Below 1500 Feet- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Slight chance of rain in the morning. * Max temperature.......62-72. * Min humidity..........57-72 percent. * 20-foot winds.........Southwest winds 3 to 5 mph. * Mixing height.........1800 ft AGL increasing to 3900 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...13 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......48-58. * Max humidity..........81-96 percent. * 20-foot winds.........Light winds. * Mixing height.........1000-2000 ft AGL. * Transport winds.......West around 5 mph shifting to the south after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Partly sunny. * Max temperature.......63-73. * Min humidity..........52-67 percent. * 20-foot winds.........Light winds becoming southwest around 5 mph in the afternoon. * Mixing height.........1300 ft AGL increasing to 4100 ft AGL in the afternoon. * Transport winds.......South 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .MONDAY NIGHT...Mostly cloudy. Lows in the mid 50s. West winds around 4 mph shifting to the southeast around 3 mph after midnight. .TUESDAY...Warmer. Partly sunny. Highs 70 to 80. Light winds becoming west around 4 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 50s. West winds around 4 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs 70 to 80. Light winds becoming west around 4 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. North winds around 3 mph. .THURSDAY...Sunny. Highs 74 to 84. North winds around 3 mph. .FRIDAY...Mostly clear. Lows 51 to 61. Highs 79 to 89. .SATURDAY...Mostly clear. Lows 52 to 62. Highs 79 to 89. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ657-172315- Southeast Puget Sound Lowlands Generally Below 1500 Feet- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. * Max temperature.......68-78. * Min humidity..........51-66 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1500 ft AGL increasing to 4300 ft AGL in the afternoon. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......49-59. * Max humidity..........82-97 percent. * 20-foot winds.........Light winds. * Mixing height.........1000-2000 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .MONDAY... * Sky/weather...........Mostly cloudy. * Max temperature.......68-78. * Min humidity..........48-63 percent. * 20-foot winds.........Light winds becoming southwest around 4 mph in the afternoon. * Mixing height.........1100 ft AGL increasing to 4400 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .MONDAY NIGHT...Mostly cloudy. Lows 51 to 61. West winds around 4 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs in the upper 70s. Light winds becoming northwest around 3 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 51 to 61. Northwest winds around 3 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs in the mid 70s. Light winds becoming northwest around 4 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 49 to 59. Light winds. .THURSDAY...Sunny. Highs in the upper 70s. North winds around 3 mph. .FRIDAY...Mostly clear. Lows in the mid 50s. Highs in the lower 80s. .SATURDAY...Mostly clear. Lows in the upper 50s. Highs in the mid 80s. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ658-172315- West Slopes of the North Cascades Generally above 1500 Feet- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Patchy fog in the morning. Slight chance of rain in the morning. * Max temperature.......62-72...except 54-64 ridges. * Min humidity..........56-71 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 3 to 4 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........1500-2500 ft AGL. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...11 percent. * Freezing level........11000 Feet. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......47-57...except 42-52 ridges. * Max humidity..........77-92 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 2 mph. * Ridges/upr slopes...West winds around 3 mph shifting to the southwest after midnight. * Mixing height.........500-1400 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. * Freezing level........11500 Feet. .MONDAY... * Sky/weather...........Partly sunny. * Max temperature.......64-74...except 56-66 ridges. * Min humidity..........52-67 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph. * Ridges/upr slopes...Southwest winds 3 to 6 mph. * Mixing height.........800 ft AGL increasing to 3000 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. * Freezing level........11000 Feet. .MONDAY NIGHT...Mostly cloudy. Freezing level 11000 feet. Lows 48 to 58 valleys...43 to 53 ridges. Southwest winds 3 to 6 mph. .TUESDAY...Partly sunny. Freezing level 11500 feet. Highs 64 to 74 valleys...57 to 67 ridges. Northwest winds 3 to 6 mph. .TUESDAY NIGHT...Mostly cloudy. Freezing level 11500 feet. Lows 46 to 56. West winds 3 to 6 mph. .WEDNESDAY...Mostly sunny. Freezing level 11500 feet. Highs 63 to 73 valleys...56 to 66 ridges. West winds 3 to 6 mph. .WEDNESDAY NIGHT...Mostly clear. Freezing level 12000 feet. Lows in the lower 50s valleys...in the mid 40s ridges. Northwest winds around 4 mph. .THURSDAY...Warmer, sunny. Freezing level 13000 feet. Highs 70 to 80 valleys...63 to 73 ridges. North winds around 3 mph. .FRIDAY...Mostly clear. Freezing level 13500 feet. Lows 48 to 58. Highs 75 to 85 valleys...69 to 79 ridges. .SATURDAY...Mostly clear. Freezing level 14500 feet. Lows 50 to 60. Highs 75 to 85 valleys...68 to 78 ridges. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ WAZ659-172315- West Slopes of the Central Cascades Generally above 1500 Feet- 758 AM PDT Sun Aug 17 2025 .Today... * Sky/weather...........Partly sunny. Widespread fog in the morning. * Max temperature.......64-74...except 54-64 ridges. * Min humidity..........57-72 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...West winds 3 to 5 mph. * Mixing height.........1300 ft AGL increasing to 3300 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. * Freezing level........12500 Feet. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......45-55...except 41-51 ridges. * Max humidity..........82-97 percent...except 76-91 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 1 to 2 mph. * Ridges/upr slopes...Northwest winds around 3 mph in the evening becoming light. * Mixing height.........500-1500 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........12000 Feet. .MONDAY... * Sky/weather...........Partly sunny. * Max temperature.......64-74...except 55-65 ridges. * Min humidity..........55-70 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 4 mph. * Ridges/upr slopes...Light winds becoming west around 5 mph in the afternoon. * Mixing height.........800 ft AGL increasing to 3100 ft AGL in the afternoon. * Transport winds.......Southwest 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. * Freezing level........12000 Feet. .MONDAY NIGHT...Partly cloudy. Freezing level 12500 feet. Lows 45 to 55. West winds around 4 mph in the evening becoming light. .TUESDAY...Mostly sunny. Freezing level 12500 feet. Highs 66 to 76 valleys...59 to 69 ridges. Light winds becoming northwest around 4 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Freezing level 12500 feet. Lows 46 to 56. Northwest winds around 4 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Freezing level 12000 feet. Highs 65 to 75 valleys...57 to 67 ridges. Light winds becoming northwest around 5 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Freezing level 12500 feet. Lows 44 to 54. Northwest winds around 3 mph. .THURSDAY...Warmer, sunny. Freezing level 13500 feet. Highs 71 to 81 valleys...64 to 74 ridges. North winds around 3 mph. .FRIDAY...Mostly clear. Freezing level 14500 feet. Lows 50 to 60. Highs 77 to 87 valleys...70 to 80 ridges. .SATURDAY...Mostly clear. Freezing level 15000 feet. Lows 52 to 62. Highs 76 to 86 valleys...69 to 79 ridges. .8 TO 14 day Outlook for Aug 24 - 30, 2025 Above normal temperatures and above normal precipitation. $$ www.weather.gov/seattle