National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

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

NA

54°F

12°C

Humidity 96%
Wind Speed NW 4 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 53°F (12°C)
Visibility NA
Last update 19 Sep 02:30 AM PDT
Extended Forecast for

Duvall WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 73. Calm wind.

    High: 73 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73. Calm wind.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 50. Calm wind.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 73. Calm wind.
Saturday Night
Mostly clear, with a low around 50. Calm wind.
Sunday
Mostly sunny, with a high near 73. Calm wind.
Sunday Night
Mostly clear, with a low around 49. Calm wind.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 68.
Tuesday Night
Mostly cloudy, with a low around 48.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Thursday
Mostly cloudy, with a high near 65.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
Friday
A slight chance of rain. Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Duvall WA
 47.74°N 121.98°W (Elev. 233 ft)
Last Update:
12:25 am PDT Sep 19, 2026
Forecast Valid:
2am PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

Radar & Satellite Image

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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