Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

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

NA

51°F

11°C

Humidity 80%
Wind Speed NNW 5 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 18 Oct 10:30 AM PDT
Extended Forecast for

Sammamish WA

  • Today

    Today: Mostly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy during the early evening, then becoming cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Becoming
    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Areas of fog after 1am.  Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy
    then Areas
    Fog

  • Tuesday

    Tuesday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 59. Light north wind.

    High: 59 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 1am.  Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am.  Otherwise, sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 58. Calm wind.
Tonight
Partly cloudy during the early evening, then becoming cloudy, with a low around 43. Calm wind.
Monday
Mostly cloudy, with a high near 59. Calm wind.
Monday Night
Areas of fog after 1am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 41. Calm wind.
Tuesday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 59. Light north wind.
Tuesday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 40.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Partly sunny, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 43.
Friday
A slight chance of rain. Partly sunny, with a high near 56.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 40.
Saturday
A slight chance of rain. Mostly cloudy, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Sammamish WA
 47.62°N 122.04°W (Elev. 469 ft)
11:26 pm PDT Oct 17, 2026
11am PDT Oct 18, 2026-6pm PDT Oct 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database