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

43°F

6°C

Humidity 89%
Wind Speed E 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 40°F (4°C)
Visibility NA
Last update 21 Mar 09:30 AM PDT
Extended Forecast for

7 Miles NNE Onalaska WA

  • Today

    Today: Mostly sunny, with a high near 43. Northwest wind 3 to 6 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 30. West northwest wind around 5 mph becoming calm.

    Low: 30 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 47. East southeast wind around 5 mph becoming light and variable.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. North wind 3 to 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 47. North northeast wind 3 to 6 mph.

    High: 47 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of rain after 11pm. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 47. Chance of precipitation is 100%.

    High: 47 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain before 2am, then snow, possibly mixed with rain. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Rain then
    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow, becoming all rain after 8am. Cloudy, with a high near 45.

    High: 45 °F

    Rain/Snow
    then Rain

Detailed Forecast

Today
Mostly sunny, with a high near 43. Northwest wind 3 to 6 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 30. West northwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 47. East southeast wind around 5 mph becoming light and variable.
Sunday Night
Mostly cloudy, with a low around 31. North wind 3 to 6 mph.
Monday
Mostly cloudy, with a high near 47. North northeast wind 3 to 6 mph.
Monday Night
A 50 percent chance of rain after 11pm. Mostly cloudy, with a low around 38.
Tuesday
Rain. High near 47. Chance of precipitation is 100%.
Tuesday Night
Rain before 2am, then snow, possibly mixed with rain. Mostly cloudy, with a low around 36.
Wednesday
Rain and snow, becoming all rain after 8am. Cloudy, with a high near 45.
Wednesday Night
Rain likely before 8pm, then rain and snow likely. Mostly cloudy, with a low around 32.
Thursday
A chance of rain and snow. Partly sunny, with a high near 45.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 31.
Friday
A slight chance of rain and snow. Mostly sunny, with a high near 49.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NNE Onalaska WA
 46.66°N 122.63°W (Elev. 1601 ft)
Last Update:
11:27 pm PDT Mar 20, 2026
Forecast Valid:
9am PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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