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

Severe Thunderstorms in Portions of the Mississippi Valley and Great Lakes

A few severe thunderstorms with large hail, are expected across parts of the middle and upper Mississippi River Valley tonight through early morning. Snow and a wintry mix overnight in the Upper Midwest into the Great Lakes can cause hazardous travel conditions. Fire weather concerns continue for a large portion of the central and southern High Plains and Four Corners region this evening. Read More >

Current conditions at

Olympia, Olympia Airport (KOLM)

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

Clear

30°F

-1°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 31 Mar 02:00 AM PDT
Extended Forecast for

Tumwater WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 30. North northeast wind around 5 mph becoming calm.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Calm wind becoming south around 5 mph in the afternoon.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 39. South wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Mostly Cloudy
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain. High near 50. South southwest wind 8 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly before 11pm. Low around 35. Southwest wind 5 to 9 mph becoming light south after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Rain then
    Chance Rain

  • Thursday

    Thursday: A 50 percent chance of rain. Partly sunny, with a high near 54.

    High: 54 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 30. North northeast wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 57. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 39. South wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. High near 50. South southwest wind 8 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain, mainly before 11pm. Low around 35. Southwest wind 5 to 9 mph becoming light south after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tumwater WA
 46.97°N 122.92°W (Elev. 200 ft)
Last Update:
11:27 pm PDT Mar 30, 2026
Forecast Valid:
2am PDT Mar 31, 2026-6pm PDT Apr 6, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation