Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
275
FNUS56 KSEW 312149
FWFSEW
Fire Weather Planning Forecast for Western Washington
National Weather Service Seattle WA
249 PM PDT Mon Aug 31 2026
.DISCUSSION...Dry and warm conditions today. Portions of the central
and southern Cascades will see minimum RH values drop between 25 to
35 percent this afternoon. A strong system arrives Wednesday with the
increasing potential for widespread wetting rains, stronger winds
along the coast and north interior, as well as a slight chance for
thunderstorms. Cooler, unsettled conditions then continue late week.
Forecast for 20 foot wind speed (valleys and ridge tops) are 10
minute averages reflecting RAWS winds.
WAZ649-011230-
North and Central Coastal Strip-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy.
* Min temperature.......50-60.
* Max humidity..........90-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Northwest winds 3 to 6 mph.
* Ridges/upr slopes...Northwest winds 3 to 6 mph.
* Mixing height.........500-600 ft AGL.
* Transport winds.......Northwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Partly sunny.
* Max temperature.......58-68.
* Min humidity..........76-91 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Light winds becoming southwest around 6 mph
in the afternoon.
* Ridges/upr slopes...Light winds becoming southwest around 5 mph
in the afternoon.
* Mixing height.........800-1700 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...4 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain in the
evening, then rain after midnight.
* Min temperature.......Around 56.
* Max humidity..........89-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 9 to 12 mph. Gusts up to 35 mph.
* Ridges/upr slopes...South winds 9 to 14 mph with gusts to around
35 mph.
* Mixing height.........800-1300 ft AGL.
* Transport winds.......South around 15 mph.
* CWR (>0.25)...........30 percent.
* Chance of Lightning...9 percent.
.WEDNESDAY...
* Sky/weather...........Cloudy. Rain in the morning, then showers
and slight chance of thunderstorms in the afternoon.
* Max temperature.......56-66.
* Min humidity..........80-95 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Southeast winds 13 to 16 mph with gusts to
around 35 mph.
* Ridges/upr slopes...Southeast winds 13 to 16 mph with gusts to
around 35 mph.
* Mixing height.........1300-2200 ft AGL.
* Transport winds.......Southeast around 20 mph.
* CWR (>0.25)...........95 percent.
* Chance of Lightning...17 percent.
.WEDNESDAY NIGHT...Showers and slight chance of thunderstorms. Lows
in the mid 50s. South winds 8 to 11 mph.
.THURSDAY...Showers and slight chance of thunderstorms. Highs in the
lower 60s. South winds 5 to 8 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the
lower 50s. Southeast winds around 3 mph.
.FRIDAY...Partly sunny. Chance of rain in the morning, then slight
chance of rain in the afternoon. Highs in the mid 60s. Southeast
winds around 3 mph.
.FRIDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening.
Lows in the lower 50s. Light winds.
.SATURDAY...Mostly sunny. Slight chance of rain in the morning.
Highs 63 to 73. North winds around 3 mph.
.SUNDAY...Mostly cloudy. Slight chance of rain. Lows in the mid 50s.
Highs in the upper 60s.
.LABOR DAY...Mostly cloudy. Slight chance of rain. Lows in the mid
50s. Highs in the upper 60s.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ650-011230-
North Coastal Lowlands-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy. Patchy fog after midnight.
* Min temperature.......48-58.
* Max humidity..........80-95 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Northwest winds around 3 mph in the evening
becoming light.
* Ridges/upr slopes...Northwest winds around 3 mph in the evening
becoming light.
* Mixing height.........400-800 ft AGL.
* Transport winds.......Northwest around 5 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Partly sunny. Patchy fog in the morning.
* Max temperature.......59-69.
* Min humidity..........72-87 percent.
* 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.........1000-2000 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...3 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain in the
evening, then rain after midnight.
* Min temperature.......47-57.
* Max humidity..........90-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 7 to 10 mph with gusts to around
30 mph.
* Ridges/upr slopes...South winds 7 to 12 mph with gusts to around
30 mph.
* Mixing height.........700-1500 ft AGL.
* Transport winds.......South 10 to 15 mph.
* CWR (>0.25)...........35 percent.
* Chance of Lightning...8 percent.
.WEDNESDAY...
* Sky/weather...........Cloudy. Rain in the morning, then showers
and slight chance of thunderstorms in the afternoon.
* Max temperature.......53-63.
* Min humidity..........82-97 percent...except 94-100 percent
ridges.
* 20-foot winds.........
* Valleys/lwr slopes..Southeast winds 9 to 12 mph with gusts to
around 30 mph.
* Ridges/upr slopes...Southeast winds 9 to 12 mph with gusts to
around 30 mph.
* Mixing height.........1200-2200 ft AGL.
* Transport winds.......Southeast 15 to 20 mph.
* CWR (>0.25)...........90 percent.
* Chance of Lightning...15 percent.
.WEDNESDAY NIGHT...Showers and slight chance of thunderstorms. Lows
in the lower 50s. South winds 5 to 8 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Highs 57 to 67. Southeast
winds 3 to 6 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of rain. Lows around
50. Light winds.
.FRIDAY...Partly sunny. Slight chance of rain in the morning, then
chance of rain in the afternoon. Highs 60 to 70. Light winds.
.FRIDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening.
Lows around 50. Light winds.
.SATURDAY...Mostly sunny with slight chance of rain. Highs 64 to 74.
Light winds.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the lower
50s. Highs 65 to 75.
.LABOR DAY...Mostly cloudy. Slight chance of rain. Lows in the mid
50s. Highs in the upper 60s.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ651-011230-
Central Coastal Lowlands-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy. Patchy fog after midnight.
* Min temperature.......Around 54.
* Max humidity..........86-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..West winds up to 3 mph.
* Ridges/upr slopes...Light winds.
* Mixing height.........300-900 ft AGL.
* Transport winds.......West around 5 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Partly sunny. Patchy fog in the morning.
Slight chance of rain in the afternoon.
* Max temperature.......58-68.
* Min humidity..........78-93 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Light winds becoming southwest around 5 mph
in the afternoon.
* Ridges/upr slopes...Light winds becoming southwest around 4 mph
in the afternoon.
* Mixing height.........1100-2100 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...6 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain.
* Min temperature.......47-57.
* Max humidity..........95-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 4 to 7 mph. Gusts up to 25 mph
after midnight.
* Ridges/upr slopes...South winds 4 to 8 mph. Gusts up to 25 mph
after midnight.
* Mixing height.........700-1600 ft AGL.
* Transport winds.......South around 10 mph.
* CWR (>0.25)...........20 percent.
* Chance of Lightning...6 percent.
.WEDNESDAY...
* Sky/weather...........Cloudy. Rain in the morning, then showers
and slight chance of thunderstorms in the afternoon.
* Max temperature.......53-63.
* Min humidity..........91-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Southeast winds 7 to 10 mph with gusts to
around 25 mph.
* Ridges/upr slopes...Southeast winds 7 to 10 mph with gusts to
around 25 mph.
* Mixing height.........1300-2300 ft AGL.
* Transport winds.......Southeast 10 to 15 mph.
* CWR (>0.25)...........85 percent.
* Chance of Lightning...16 percent.
.WEDNESDAY NIGHT...Showers and slight chance of thunderstorms. Lows
in the lower 50s. South winds 4 to 7 mph.
.THURSDAY...Showers likely and slight chance of thunderstorms in the
morning, then showers and chance of thunderstorms in the afternoon.
Highs in the lower 60s valleys...in the mid 50s ridges. South winds
4 to 7 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Lows around 50. Light winds.
.FRIDAY...Mostly cloudy with a chance of rain. Highs in the mid 60s
valleys...around 60 ridges. Light winds.
.FRIDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening.
Lows in the lower 50s. Light winds.
.SATURDAY...Mostly sunny with slight chance of rain. Highs in the
lower 70s valleys...in the mid 60s ridges. Light winds.
.SUNDAY...Mostly cloudy. Slight chance of rain. Lows in the lower
50s. Highs in the lower 70s valleys...in the mid 60s ridges.
.LABOR DAY...Mostly cloudy. Slight chance of rain. Lows in the mid
50s. Highs in the lower 70s valleys...in the mid 60s ridges.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ652-011230-
West Portion of the Olympic Mountains-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy then becoming partly cloudy.
* Min temperature.......45-55.
* Max humidity..........78-93 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Downslope/downvalley 1 to 2 mph.
* Ridges/upr slopes...Light winds.
* Mixing height.........300-1000 ft AGL.
* Transport winds.......Southwest around 5 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
* Freezing level........12000 Feet.
.TUESDAY...
* Sky/weather...........Partly sunny.
* Max temperature.......56-66...except 53-63 ridges.
* Min humidity..........69-84 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph.
* Ridges/upr slopes...Light winds becoming southwest around 6 mph
in the afternoon.
* Mixing height.........1000-2000 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...4 percent.
* Freezing level........11500 Feet.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain in the
evening, then rain after midnight.
* Min temperature.......45-55...except 42-52 ridges.
* Max humidity..........85-100 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 6 to 9 mph with gusts to around
25 mph.
* Ridges/upr slopes...South winds 6 to 9 mph with gusts to around
25 mph.
* Mixing height.........800-1300 ft AGL.
* Transport winds.......South around 10 mph.
* CWR (>0.25)...........40 percent.
* Chance of Lightning...6 percent.
* Freezing level........9500 Feet.
.WEDNESDAY...
* Sky/weather...........Cloudy. Rain in the morning, then showers
and slight chance of thunderstorms in the afternoon.
* Max temperature.......50-60...except 46-56 ridges.
* Min humidity..........78-93 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Southeast winds 8 to 11 mph with gusts to
around 30 mph.
* Ridges/upr slopes...Southeast winds 8 to 11 mph with gusts to
around 30 mph.
* Mixing height.........1400-2400 ft AGL.
* Transport winds.......South around 15 mph.
* CWR (>0.25)...........90 percent.
* Chance of Lightning...14 percent.
* Freezing level........8000 Feet.
.WEDNESDAY NIGHT...Showers and slight chance of thunderstorms.
Freezing level 7000 feet. Lows 42 to 52. South winds 5 to 8 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Freezing level 6500 feet.
Highs 51 to 61 valleys...46 to 56 ridges. South winds 3 to 6 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of rain. Freezing
level 7500 feet. Lows 42 to 52. Light winds.
.FRIDAY...Partly sunny with a chance of rain. Freezing level
7000 feet. Highs 52 to 62. Light winds.
.FRIDAY NIGHT...Mostly cloudy with slight chance of rain. Freezing
level 8000 feet. Lows in the upper 40s. Light winds.
.SATURDAY...Mostly sunny with slight chance of rain. Freezing level
8500 feet. Highs 59 to 69 valleys...54 to 64 ridges. North winds
around 3 mph.
.SUNDAY...Partly cloudy. Slight chance of rain. Freezing level
10000 feet. Lows in the lower 50s. Highs 61 to 71 valleys...56 to
66 ridges.
.LABOR DAY...Partly cloudy. Slight chance of rain. Freezing level
12500 feet. Lows 48 to 58. Highs 59 to 69.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ661-011230-
East Portion of the Olympic Mountains-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy then becoming partly cloudy.
* Min temperature.......48-58...except 45-55 ridges.
* Max humidity..........76-91 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Downslope/downvalley around 2 mph.
* Ridges/upr slopes...Light winds becoming southwest around 3 mph
after midnight.
* Mixing height.........400-900 ft AGL.
* Transport winds.......Southwest around 5 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
* Freezing level........12500 Feet.
.TUESDAY...
* Sky/weather...........Mostly sunny.
* Max temperature.......60-70...except 53-63 ridges.
* Min humidity..........67-82 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Southwest winds 3 to 6 mph.
* Ridges/upr slopes...Southwest winds 3 to 6 mph.
* Mixing height.........1100-2100 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...5 percent.
* Freezing level........11500 Feet.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain in the
evening, then rain after midnight.
* Min temperature.......45-55...except 41-51 ridges.
* Max humidity..........80-95 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 6 to 9 mph.
* Ridges/upr slopes...South winds 6 to 9 mph. Gusts up to 25 mph
after midnight.
* Mixing height.........600-1200 ft AGL.
* Transport winds.......Southwest around 10 mph.
* CWR (>0.25)...........25 percent.
* Chance of Lightning...3 percent.
* Freezing level........9500 Feet.
.WEDNESDAY...
* Sky/weather...........Mostly cloudy. Rain.
* Max temperature.......52-62...except 46-56 ridges.
* Min humidity..........79-94 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 8 to 11 mph.
* Ridges/upr slopes...South winds 8 to 11 mph with gusts to around
25 mph.
* Mixing height.........1200-2200 ft AGL.
* Transport winds.......South around 15 mph.
* CWR (>0.25)...........80 percent.
* Chance of Lightning...12 percent.
* Freezing level........8500 Feet.
.WEDNESDAY NIGHT...Rain. Freezing level 7500 feet. Lows in the upper
40s valleys...38 to 48 ridges. Southwest winds 6 to 9 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Freezing level 7000 feet.
Highs 53 to 63 valleys...44 to 54 ridges. Southwest winds 3 to
6 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Freezing level 7500 feet. Lows in the
upper 40s valleys...38 to 48 ridges. Light winds.
.FRIDAY...Partly sunny with a chance of rain. Freezing level
7000 feet. Highs 55 to 65 valleys...46 to 56 ridges. Northeast winds
around 3 mph.
.FRIDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening.
Freezing level 8000 feet. Lows in the upper 40s valleys...39 to
49 ridges. Light winds.
.SATURDAY...Mostly sunny. Chance of rain in the afternoon. Freezing
level 8500 feet. Highs 59 to 69 valleys...52 to 62 ridges. Northeast
winds around 3 mph.
.SUNDAY...Partly cloudy. Chance of rain. Freezing level 9500 feet.
Lows 45 to 55. Highs 62 to 72 valleys...54 to 64 ridges.
.LABOR DAY...Partly cloudy. Chance of rain. Freezing level
12500 feet. Lows 46 to 56. Highs 62 to 72 valleys...55 to 65 ridges.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ653-011230-
Strait of Juan De Fuca and Northwest Interior Lowlands-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy then becoming partly cloudy.
* Min temperature.......48-58.
* Max humidity..........79-94 percent.
* 20-foot winds.........Northwest winds around 3 mph in the evening
becoming light.
* Mixing height.........400-500 ft AGL.
* Transport winds.......West around 5 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Mostly sunny.
* Max temperature.......65-75.
* Min humidity..........63-78 percent.
* 20-foot winds.........Southwest winds 4 to 7 mph.
* Mixing height.........600-1300 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...2 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Slight chance of rain in the
evening. Chance of rain after midnight.
* Min temperature.......48-58.
* Max humidity..........78-93 percent.
* 20-foot winds.........South winds 5 to 9 mph. Gusts up to 30 mph
after midnight.
* Mixing height.........500-700 ft AGL.
* Transport winds.......South around 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...2 percent.
.WEDNESDAY...
* Sky/weather...........Partly sunny. Chance of rain through the
day.
* Max temperature.......60-70.
* Min humidity..........69-84 percent.
* 20-foot winds.........Southeast winds 12 to 15 mph with gusts to
around 30 mph.
* Mixing height.........1000-2000 ft AGL.
* Transport winds.......Southeast 15 to 20 mph.
* CWR (>0.25)...........20 percent.
* Chance of Lightning...10 percent.
.WEDNESDAY NIGHT...Rain in the evening, then rain likely after
midnight. Lows 47 to 57. South winds 9 to 12 mph.
.THURSDAY...Mostly cloudy. Chance of rain in the morning, then
showers likely and slight chance of thunderstorms in the afternoon.
Highs 61 to 71. Southeast winds 6 to 9 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of rain. Lows 46 to
56. South winds around 4 mph.
.FRIDAY...Mostly cloudy with a chance of rain. Highs 61 to 71. South
winds around 3 mph.
.FRIDAY NIGHT...Mostly cloudy. Slight chance of rain after midnight.
Lows in the lower 50s. Light winds.
.SATURDAY...Mostly sunny. Slight chance of rain in the afternoon.
Highs 63 to 73. North winds around 3 mph.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the lower
50s. Highs 65 to 75.
.LABOR DAY...Mostly cloudy. Slight chance of rain. Lows in the mid
50s. Highs 65 to 75.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ654-011230-
Central and South Puget Sound Lowlands-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy then becoming partly cloudy.
* Min temperature.......48-58.
* Max humidity..........78-93 percent.
* 20-foot winds.........Northeast winds around 4 mph in the evening
becoming light.
* Mixing height.........400-1000 ft AGL.
* Transport winds.......Northeast around 5 mph shifting to the west
after midnight.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Mostly sunny.
* Max temperature.......64-74.
* Min humidity..........63-78 percent.
* 20-foot winds.........Southwest winds 5 to 10 mph.
* Mixing height.........800 ft AGL increasing to 3000 ft AGL in the
afternoon.
* Transport winds.......Southwest 10 to 15 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...3 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain after
midnight.
* Min temperature.......49-59.
* Max humidity..........85-100 percent.
* 20-foot winds.........Southwest winds 8 to 11 mph. Gusts up to 25
mph after midnight.
* Mixing height.........800-1800 ft AGL.
* Transport winds.......Southwest 10 to 15 mph.
* CWR (>0.25)...........5 percent.
* Chance of Lightning...1 percent.
.WEDNESDAY...
* Sky/weather...........Mostly cloudy. Chance of rain in the
morning, then rain in the afternoon.
* Max temperature.......57-67.
* Min humidity..........77-92 percent.
* 20-foot winds.........South winds 9 to 13 mph. Gusts up to 25 mph
in the afternoon.
* Mixing height.........1100 ft AGL increasing to 3100 ft AGL in
the afternoon.
* Transport winds.......South 10 to 15 mph.
* CWR (>0.25)...........60 percent.
* Chance of Lightning...12 percent.
.WEDNESDAY NIGHT...Rain in the evening, then rain likely after
midnight. Lows 47 to 57. South winds 10 to 13 mph.
.THURSDAY...Rain likely in the morning, then showers and chance of
thunderstorms in the afternoon. Highs in the mid 60s. South winds
6 to 9 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Lows 46 to 56. Southwest winds around
4 mph.
.FRIDAY...Mostly cloudy with a chance of rain. Highs 63 to 73. South
winds around 4 mph.
.FRIDAY NIGHT...Partly cloudy. Chance of rain in the evening, then
slight chance of rain after midnight. Lows in the lower 50s. Light
winds.
.SATURDAY...Mostly sunny. Slight chance of rain in the afternoon.
Highs 66 to 76. Northeast winds around 4 mph.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the lower
50s. Highs in the lower 70s.
.LABOR DAY...Mostly cloudy. Chance of rain. Lows in the mid 50s.
Highs 67 to 77.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ655-011230-
Black Hills and Southwest Interior Lowlands-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy. Patchy fog after midnight.
* Min temperature.......50-60.
* Max humidity..........78-93 percent.
* 20-foot winds.........Light winds.
* Mixing height.........300-1300 ft AGL.
* Transport winds.......North around 5 mph shifting to the
southwest after midnight.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Partly sunny. Patchy fog in the morning.
Slight chance of rain in the afternoon.
* Max temperature.......63-73.
* Min humidity..........67-82 percent.
* 20-foot winds.........Southwest winds 3 to 6 mph.
* Mixing height.........900 ft AGL increasing to 2900 ft AGL in the
afternoon.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...4 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Slight chance of rain in the
evening. Chance of rain after midnight.
* Min temperature.......47-57.
* Max humidity..........88-100 percent.
* 20-foot winds.........South winds 3 to 6 mph. Gusts up to 25 mph
after midnight.
* Mixing height.........700-1700 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........5 percent.
* Chance of Lightning...3 percent.
.WEDNESDAY...
* Sky/weather...........Mostly cloudy. Rain.
* Max temperature.......56-66.
* Min humidity..........82-97 percent.
* 20-foot winds.........South winds 8 to 11 mph with gusts to
around 30 mph.
* Mixing height.........1600-2600 ft AGL.
* Transport winds.......South 10 to 15 mph.
* CWR (>0.25)...........65 percent.
* Chance of Lightning...11 percent.
.WEDNESDAY NIGHT...Rain in the evening, then rain likely after
midnight. Lows in the lower 50s. South winds 5 to 8 mph.
.THURSDAY...Rain likely in the morning, then showers and chance of
thunderstorms in the afternoon. Highs in the mid 60s. South winds
5 to 8 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Lows in the upper 40s. Light winds.
.FRIDAY...Mostly cloudy with a chance of rain. Highs in the upper
60s. Light winds.
.FRIDAY NIGHT...Partly cloudy with slight chance of rain. Lows
around 50. Light winds.
.SATURDAY...Partly sunny with slight chance of rain. Highs in the
lower 70s. Light winds.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the lower
50s. Highs in the lower 70s.
.LABOR DAY...Mostly cloudy. Slight chance of rain. Lows in the lower
50s. Highs in the mid 70s.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ656-011230-
Northeast Puget Sound Lowlands Generally Below 1500 Feet-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy.
* Min temperature.......50-60.
* Max humidity..........74-89 percent.
* 20-foot winds.........Light winds.
* Mixing height.........300-800 ft AGL.
* Transport winds.......Northwest around 5 mph shifting to the
south after midnight.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...1 percent.
.TUESDAY...
* Sky/weather...........Mostly sunny.
* Max temperature.......64-74.
* Min humidity..........57-72 percent.
* 20-foot winds.........Light winds becoming southwest around 5 mph
in the afternoon.
* Mixing height.........700 ft AGL increasing to 3000 ft AGL in the
afternoon.
* Transport winds.......South 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...5 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Slight chance of rain.
* Min temperature.......46-56.
* Max humidity..........74-89 percent.
* 20-foot winds.........South winds 5 to 8 mph. Gusts up to 25 mph
after midnight.
* Mixing height.........600-1400 ft AGL.
* Transport winds.......South around 10 mph.
* CWR (>0.25)...........5 percent.
* Chance of Lightning...5 percent.
.WEDNESDAY...
* Sky/weather...........Partly sunny. Slight chance of rain in the
morning, then rain likely in the afternoon.
* Max temperature.......57-67.
* Min humidity..........69-84 percent.
* 20-foot winds.........South winds 7 to 10 mph with gusts to
around 25 mph.
* Mixing height.........1000 ft AGL increasing to 3500 ft AGL in
the afternoon.
* Transport winds.......South 10 to 15 mph.
* CWR (>0.25)...........15 percent.
* Chance of Lightning...12 percent.
.WEDNESDAY NIGHT...Rain. Lows in the lower 50s. South winds 6 to
9 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Highs 60 to 70. South
winds 3 to 6 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of rain. Lows around
50. Southeast winds around 3 mph.
.FRIDAY...Mostly cloudy with a chance of rain. Highs 63 to 73. Light
winds.
.FRIDAY NIGHT...Mostly cloudy with slight chance of rain. Lows in
the lower 50s. Light winds.
.SATURDAY...Mostly sunny. Slight chance of rain in the afternoon.
Highs 68 to 78. Light winds.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the lower
50s. Highs 68 to 78.
.LABOR DAY...Mostly cloudy. Chance of rain. Lows in the mid 50s.
Highs 68 to 78.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ657-011230-
Southeast Puget Sound Lowlands Generally Below 1500 Feet-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy.
* Min temperature.......49-59.
* Max humidity..........80-95 percent.
* 20-foot winds.........Light winds.
* Mixing height.........300-1000 ft AGL.
* Transport winds.......North around 5 mph shifting to the
southwest after midnight.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...0 percent.
.TUESDAY...
* Sky/weather...........Partly sunny.
* Max temperature.......66-76.
* Min humidity..........60-75 percent.
* 20-foot winds.........Light winds becoming southwest around 5 mph
in the afternoon.
* Mixing height.........900 ft AGL increasing to 3500 ft AGL in the
afternoon.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...5 percent.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Slight chance of rain.
* Min temperature.......49-59.
* Max humidity..........81-96 percent.
* 20-foot winds.........South winds 3 to 6 mph.
* Mixing height.........900-1900 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...5 percent.
.WEDNESDAY...
* Sky/weather...........Partly sunny then becoming cloudy. Rain.
* Max temperature.......61-71.
* Min humidity..........75-90 percent.
* 20-foot winds.........South winds 5 to 8 mph. Gusts up to 25 mph
in the afternoon.
* Mixing height.........900 ft AGL increasing to 3900 ft AGL in the
afternoon.
* Transport winds.......South around 5 mph increasing to around 15
mph in the afternoon.
* CWR (>0.25)...........35 percent.
* Chance of Lightning...12 percent.
.WEDNESDAY NIGHT...Rain in the evening, then rain likely after
midnight. Lows 48 to 58. South winds 4 to 7 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Highs in the mid 60s.
South winds 3 to 6 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Lows 46 to 56. Light winds.
.FRIDAY...Mostly cloudy with a chance of rain. Highs in the upper
60s. Light winds.
.FRIDAY NIGHT...Partly cloudy with slight chance of rain. Lows 47 to
57. Light winds.
.SATURDAY...Partly sunny. Slight chance of rain in the afternoon.
Highs in the lower 70s. Light winds.
.SUNDAY...Partly cloudy. Slight chance of rain. Lows in the lower
50s. Highs in the lower 70s.
.LABOR DAY...Mostly cloudy. Chance of rain. Lows 50 to 60. Highs in
the lower 70s.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ658-011230-
West Slopes of the North Cascades Generally above 1500 Feet-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy.
* Min temperature.......49-59...except 45-55 ridges.
* Max humidity..........65-80 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Downslope/downvalley 2 to 3 mph.
* Ridges/upr slopes...Light winds becoming south around 5 mph after
midnight.
* Mixing height.........300-1100 ft AGL.
* Transport winds.......South around 5 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...1 percent.
* Freezing level........12500 Feet.
.TUESDAY...
* Sky/weather...........Mostly sunny. Chance of rain in the
afternoon.
* Max temperature.......64-74...except 61-71 ridges.
* Min humidity..........55-70 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph.
* Ridges/upr slopes...Southwest winds 3 to 6 mph.
* Mixing height.........700 ft AGL increasing to 2800 ft AGL in the
afternoon.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...9 percent.
* Freezing level........12000 Feet.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain.
* Min temperature.......45-55...except 40-50 ridges.
* Max humidity..........74-89 percent...except 80-95 percent
ridges.
* 20-foot winds.........
* Valleys/lwr slopes..Southwest winds 5 to 8 mph.
* Ridges/upr slopes...Southwest winds 5 to 8 mph.
* Mixing height.........600-1500 ft AGL.
* Transport winds.......Southwest around 10 mph.
* CWR (>0.25)...........10 percent.
* Chance of Lightning...9 percent.
* Freezing level........10500 Feet.
.WEDNESDAY...
* Sky/weather...........Mostly cloudy. Chance of rain in the
morning, then showers likely and slight chance of thunderstorms
in the afternoon.
* Max temperature.......56-66...except 50-60 ridges.
* Min humidity..........73-88 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 5 to 8 mph.
* Ridges/upr slopes...South winds 5 to 8 mph.
* Mixing height.........900 ft AGL increasing to 3300 ft AGL in the
afternoon.
* Transport winds.......South around 10 mph.
* CWR (>0.25)...........20 percent.
* Chance of Lightning...15 percent.
* Freezing level........8500 Feet.
.WEDNESDAY NIGHT...Rain. Freezing level 8000 feet. Lows in the upper
40s valleys...38 to 48 ridges. Southwest winds 4 to 7 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Freezing level 6500 feet.
Highs 53 to 63 valleys...44 to 54 ridges. Southwest winds 3 to
6 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Freezing level 7500 feet. Lows in the
upper 40s valleys...37 to 47 ridges. Southwest winds around 3 mph.
.FRIDAY...Mostly cloudy. Chance of rain in the morning, then showers
likely and slight chance of thunderstorms in the afternoon. Freezing
level 7000 feet. Highs 56 to 66 valleys...48 to 58 ridges. West
winds around 3 mph.
.FRIDAY NIGHT...Mostly cloudy with slight chance of rain. Freezing
level 8500 feet. Lows in the upper 40s valleys...in the lower 40s
ridges. Northeast winds around 3 mph.
.SATURDAY...Warmer. Mostly sunny. Slight chance of rain in the
morning, then chance of rain in the afternoon. Freezing level
8500 feet. Highs 62 to 72 valleys...55 to 65 ridges. Northeast winds
around 3 mph.
.SUNDAY...Mostly cloudy. Chance of rain. Freezing level 9500 feet.
Lows 47 to 57 valleys...in the upper 40s ridges. Highs 63 to
73 valleys...56 to 66 ridges.
.LABOR DAY...Mostly cloudy. Chance of rain. Freezing level
12000 feet. Lows 45 to 55. Highs 62 to 72 valleys...55 to 65 ridges.
.8 TO 14 Day Outlook for Western Washington
Near normal temperatures and above normal precipitation.
$$
WAZ659-011230-
West Slopes of the Central Cascades Generally above 1500 Feet-
249 PM PDT Mon Aug 31 2026
.TONIGHT...
* Sky/weather...........Mostly cloudy.
* Min temperature.......50-60...except 45-55 ridges.
* Max humidity..........74-89 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Downslope/downvalley around 2 mph.
* Ridges/upr slopes...Light winds becoming south around 3 mph after
midnight.
* Mixing height.........300-1200 ft AGL.
* Transport winds.......Southeast around 5 mph shifting to the
south after midnight.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...1 percent.
* Freezing level........12500 Feet.
.TUESDAY...
* Sky/weather...........Partly sunny. Chance of rain in the
afternoon.
* Max temperature.......65-75...except 57-67 ridges.
* Min humidity..........66-81 percent.
* 20-foot winds.........
* Valleys/lwr slopes..Upslope/upvalley 2 to 5 mph.
* Ridges/upr slopes...Light winds becoming west around 5 mph in the
afternoon.
* Mixing height.........1100-2100 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........0 percent.
* Chance of Lightning...6 percent.
* Freezing level........12000 Feet.
.TUESDAY NIGHT...
* Sky/weather...........Mostly cloudy. Chance of rain through the
night.
* Min temperature.......48-58...except 37-47 ridges.
* Max humidity..........75-90 percent...except 88-100 percent
ridges.
* 20-foot winds.........
* Valleys/lwr slopes..Downslope/downvalley around 4 mph.
* Ridges/upr slopes...Southwest winds 4 to 7 mph.
* Mixing height.........600-1500 ft AGL.
* Transport winds.......Southwest 5 to 10 mph.
* CWR (>0.25)...........10 percent.
* Chance of Lightning...6 percent.
* Freezing level........10500 Feet.
.WEDNESDAY...
* Sky/weather...........Mostly cloudy. Chance of rain in the
morning, then rain in the afternoon.
* Max temperature.......59-69...except 45-55 ridges.
* Min humidity..........65-80 percent.
* 20-foot winds.........
* Valleys/lwr slopes..South winds 5 to 8 mph with gusts to around
25 mph.
* Ridges/upr slopes...South winds 5 to 8 mph with gusts to around
25 mph.
* Mixing height.........900 ft AGL increasing to 3300 ft AGL in the
afternoon.
* Transport winds.......South around 10 mph.
* CWR (>0.25)...........50 percent.
* Chance of Lightning...11 percent.
* Freezing level........8000 Feet.
.WEDNESDAY NIGHT...Rain in the evening, then rain likely after
midnight. Freezing level 7500 feet. Lows 44 to 54 valleys...in the
lower 40s ridges. Southwest winds 4 to 7 mph.
.THURSDAY...Rain likely in the morning, then showers and slight
chance of thunderstorms in the afternoon. Freezing level 6500 feet.
Highs 54 to 64 valleys...43 to 53 ridges. Southwest winds 3 to
6 mph.
.THURSDAY NIGHT...Mostly cloudy. Rain likely in the evening, then
chance of rain after midnight. Freezing level 7000 feet. Lows 43 to
53 valleys...in the lower 40s ridges. South winds around 3 mph.
.FRIDAY...Mostly cloudy. Chance of rain in the morning, then rain
likely in the afternoon. Freezing level 7000 feet. Highs 57 to
67 valleys...47 to 57 ridges. West winds around 3 mph.
.FRIDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then
slight chance of rain after midnight. Freezing level 8500 feet. Lows
44 to 54 valleys...in the lower 40s ridges. Light winds.
.SATURDAY...Warmer. Partly sunny. Slight chance of rain in the
morning, then chance of rain in the afternoon. Freezing level
8500 feet. Highs 62 to 72 valleys...53 to 63 ridges. Northeast winds
around 3 mph.
.SUNDAY...Mostly cloudy. Chance of rain. Freezing level 10000 feet.
Lows 47 to 57 valleys...in the upper 40s ridges. Highs 64 to
74 valleys...55 to 65 ridges.
.LABOR DAY...Mostly cloudy. Chance of rain. Freezing level
12000 feet. Lows 49 to 59 valleys...in the upper 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.
$$
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