Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Olympia, Olympia Airport (KOLM)

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

freezing fog

31°F

-1°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 31°F (-1°C)
Visibility 0.25 mi
Last update 20 Jan 04:54 AM PST
Extended Forecast for

Tumwater WA

  • Today

    Today: Patchy dense fog before 11am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 46. Light north northeast wind.

    High: 46 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tonight

    Tonight: Patchy fog between 4am and 5am.  Otherwise, partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Mostly cloudy, with a high near 44. Calm wind.

    High: 44 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Patchy fog before 1am, then patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 31.

    Low: 31 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am.  Otherwise, partly sunny, with a high near 44.

    High: 44 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog before 3am, then patchy fog after 4am.  Otherwise, partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

Detailed Forecast

Today
Patchy dense fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 46. Light north northeast wind.
Tonight
Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 28. Calm wind.
Wednesday
Mostly sunny, with a high near 45. Calm wind.
Wednesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 27. Calm wind.
Thursday
Mostly cloudy, with a high near 44. Calm wind.
Thursday Night
Patchy fog before 1am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 31.
Friday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 44.
Friday Night
Patchy fog before 3am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 45.
Saturday Night
Rain likely, possibly mixed with snow, mainly after 4am. Mostly cloudy, with a low around 30.
Sunday
Rain likely. Cloudy, with a high near 45.
Sunday Night
Rain likely. Cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Tumwater WA
 46.97°N 122.92°W (Elev. 200 ft)
1:25 am PST Jan 20, 2026
5am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database