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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

Lat: 46.64646°NLon: 122.8388°WElev: 550.0ft.

NA

31°F

-1°C

Humidity 96%
Wind Speed NW 0 MPH
Barometer 30.42 in (1030.14 mb)
Dewpoint 30°F (-1°C)
Visibility NA
Last update 21 Mar 11:15 PM PDT
Extended Forecast for

3 Miles S Onalaska WA

  • Tonight

    Tonight: Mostly clear, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 52. Light and variable wind.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32. Light north northwest wind.

    Low: 32 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 53. Calm wind.

    High: 53 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of rain after 11pm. Cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 51. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 38. Chance of precipitation is 90%.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 48.

    High: 48 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 31. Calm wind.
Sunday
Mostly sunny, with a high near 52. Light and variable wind.
Sunday Night
Mostly cloudy, with a low around 32. Light north northwest wind.
Monday
Mostly cloudy, with a high near 53. Calm wind.
Monday Night
A 50 percent chance of rain after 11pm. Cloudy, with a low around 41. Calm wind.
Tuesday
Rain. High near 51. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 38. Chance of precipitation is 90%.
Wednesday
Rain likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 48.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 32.
Thursday
A chance of rain. Partly sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 31.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 34.
Saturday
A slight chance of rain. Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Onalaska WA
 46.54°N 122.72°W (Elev. 528 ft)
Last Update:
11:27 pm PDT Mar 21, 2026
Forecast Valid:
11pm PDT Mar 21, 2026-6pm PDT Mar 28, 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