Fire Weather Watch

* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet.

* RELATIVE HUMIDITY...As low as 15 to 25 percent.

* TEMPERATURES...Up to 90 to 100 degrees.

* STABILITY...Unstable conditions can be expected.

* IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.

Saturday, Aug 23, 11:00 PM PDT

Extreme Heat Warning

* WHAT...Hot conditions with high temperatures ranging from the upper 80s to upper 90s and low temperatures mostly in the 60s. This will pose a major risk of heat-related illness.

* WHERE...Foothills and Valleys of the North Cascades, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Snohomish and Northern King Counties, and Foothills and Valleys of Thurston and Lewis Counties.

* WHEN...Until 5 AM PDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Saturday, Aug 23, 11:00 PM PDT

Heat Advisory

* WHAT...Hot conditions with high temperatures ranging from the mid 80s to 90s expected and low temperatures mostly in the 60s. This will pose a moderate risk of heat-related illness.

* WHERE...Portions of northwest and west central Washington.

* WHEN...Until 5 AM PDT Tuesday.

* IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

Saturday, Aug 23, 11:00 PM PDT

Red Flag Warning

* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet.

* RELATIVE HUMIDITY...As low as 15 to 25 percent.

* TEMPERATURES...Up to 90 to 100 degrees.

* STABILITY...Unstable conditions can be expected.

* IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.

Saturday, Aug 23, 11:00 PM PDT
Clear
83°
Feels 83°
 43%
Dewpt 59°
 nnw
6 - 9 mph
Saturday, Aug 23
Partly cloudy throughout the day.
63 88 63 - 88
Sunday, Aug 24
Partly cloudy throughout the day.
65 89 65 - 89
Monday, Aug 25
Partly cloudy throughout the day.
65 87 65 - 87
Tuesday, Aug 26
Partly cloudy throughout the day.
65 85 65 - 85
Wednesday, Aug 27
Partly cloudy throughout the day.
66 79 66 - 79
Thursday, Aug 28
Partly cloudy throughout the day.
64 78 64 - 78
Friday, Aug 29
Partly cloudy throughout the day.
62 75 62 - 75
Saturday, Aug 30
Partly cloudy throughout the day.
61 74 61 - 74
Sunday, Aug 31
Becoming cloudy in the afternoon.
52 67 52 - 67
Monday, Sep 1
Partly cloudy throughout the day.
49 66 49 - 66
Tuesday, Sep 2
Partly cloudy throughout the day.
47 71 47 - 71
Wednesday, Sep 3
Partly cloudy throughout the day.
54 67 54 - 67
Thursday, Sep 4
Becoming cloudy in the afternoon.
52 70 52 - 70
Friday, Sep 5
Partly cloudy throughout the day.
51 68 51 - 68
Saturday, Sep 6
Partly cloudy throughout the day.
50 69 50 - 69
Weather forecast for Seattle, WA on Sun, 24 Aug 2025 01:14:57 GMT