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

30°F

-1°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 30°F (-1°C)
Visibility 0.24 mi
Last update 20 Jan 03:35 AM PST
Extended Forecast for

4 Miles WNW Tumwater WA

  • Overnight

    Overnight: Patchy dense fog.  Otherwise, mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Patchy dense fog before 9am.  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

  • Tuesday Night

    Tuesday Night: Patchy fog before midnight, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog between 7am and 8am.  Otherwise, mostly sunny, with a high near 46. Calm wind.

    High: 46 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before 4am, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog between 7am and 8am.  Otherwise, partly sunny, with a high near 44.

    High: 44 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog before 4am, then patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 32.

    Low: 32 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 45.

    High: 45 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 31. Calm wind.
Tuesday
Patchy dense fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 46. Light north northeast wind.
Tuesday Night
Patchy fog before midnight, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 31. Calm wind.
Wednesday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 46. Calm wind.
Wednesday Night
Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 29. Calm wind.
Thursday
Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 44.
Thursday Night
Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 32.
Friday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Partly sunny, with a high near 45.
Saturday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Sunday
Rain likely. Mostly cloudy, with a high near 45.
Sunday Night
Rain likely. Cloudy, with a low around 38.
Monday
A chance of rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Tumwater WA
 47°N 122.99°W (Elev. 174 ft)
1:25 am PST Jan 20, 2026
3am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database