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

Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Current conditions at

Olympia, Olympia Airport (KOLM)

Lat: 46.97333°NLon: 122.90333°WElev: 203.0ft.

Partly Cloudy

55°F

13°C

Humidity 39%
Wind Speed WSW 9 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 16 Apr 01:54 PM PDT
Extended Forecast for

Tumwater WA

  • This Afternoon

    This Afternoon: Sunny, with a high near 57. West southwest wind 8 to 13 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Patchy frost after 4am. Otherwise, partly cloudy, with a low around 34. West southwest wind 8 to 13 mph becoming light south southwest after midnight. Winds could gust as high as 21 mph.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Frost

  • Friday

    Friday: Patchy frost before 8am. Otherwise, increasing clouds, with a high near 58. Light and variable wind.

    High: 58 °F

    Patchy Frost
    then
    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. Light north northeast wind.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 67. Light and variable wind.

    High: 67 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain. Mostly cloudy, with a high near 69.

    High: 69 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 57. West southwest wind 8 to 13 mph.
Tonight
Patchy frost after 4am. Otherwise, partly cloudy, with a low around 34. West southwest wind 8 to 13 mph becoming light south southwest after midnight. Winds could gust as high as 21 mph.
Friday
Patchy frost before 8am. Otherwise, increasing clouds, with a high near 58. Light and variable wind.
Friday Night
Mostly cloudy, with a low around 37. Light north northeast wind.
Saturday
Mostly cloudy, with a high near 67. Light and variable wind.
Saturday Night
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 71.
Monday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46.
Tuesday
A chance of rain. Partly sunny, with a high near 64.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 47.
Wednesday
A chance of rain. Mostly cloudy, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tumwater WA
 46.99°N 122.92°W (Elev. 151 ft)
Last Update:
11:27 am PDT Apr 16, 2026
Forecast Valid:
2pm PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation