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Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

Lat: 47.68528°NLon: 122.25111°WElev: 29.0ft.

NA

69°F

21°C

Humidity 58%
Wind Speed ENE 1 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 54°F (12°C)
Visibility NA
Last update 31 Jul 09:30 AM PDT
Extended Forecast for

Sammamish WA

  • Today

    Today: Sunny, with a high near 83. Light north northwest wind.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind becoming south around 5 mph after midnight.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: A 50 percent chance of rain after 11am. Partly sunny, with a high near 73. South wind 9 to 13 mph.

    High: 73 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 53. West wind 5 to 11 mph becoming south after midnight.

    Low: 53 °F

    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 11am. Partly sunny, with a high near 71. Calm wind.

    High: 71 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 83. Light north northwest wind.
Tonight
Mostly clear, with a low around 57. Calm wind becoming south around 5 mph after midnight.
Saturday
A 50 percent chance of rain after 11am. Partly sunny, with a high near 73. South wind 9 to 13 mph.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 53. West wind 5 to 11 mph becoming south after midnight.
Sunday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 71. Calm wind.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sammamish WA
 47.62°N 122.04°W (Elev. 469 ft)
Last Update:
1:43 am PDT Jul 31, 2026
Forecast Valid:
10am PDT Jul 31, 2026-6pm PDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation