Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

29°F

-2°C

Humidity 97%
Wind Speed NNW 0 MPH
Barometer 30.46 in (1031.49 mb)
Dewpoint 28°F (-2°C)
Visibility NA
Last update 15 Mar 12:45 AM PDT
Extended Forecast for

Onalaska WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow between 10am and 11am, then a chance of rain.  Cloudy, with a high near 47. Calm wind.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 47 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly before 11pm.  Cloudy, with a low around 41. Calm wind.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely
    then Chance
    Rain

  • Monday

    Monday: Rain likely.  Cloudy, with a high near 58. South southeast wind 3 to 6 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Rain Likely

  • Monday Night

    Monday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 45. South wind 3 to 5 mph.

    Low: 45 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain.  High near 53. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 47. Chance of precipitation is 90%.

    Low: 47 °F

    Rain

  • Wednesday

    Wednesday: Rain.  Cloudy, with a high near 54.

    High: 54 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Cloudy, with a low around 48.

    Low: 48 °F

    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. Calm wind.
Sunday
A slight chance of rain and snow between 10am and 11am, then a chance of rain. Cloudy, with a high near 47. Calm wind. Chance of precipitation is 50%. Little or no snow accumulation expected.
Sunday Night
Rain likely, mainly before 11pm. Cloudy, with a low around 41. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain likely. Cloudy, with a high near 58. South southeast wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45. South wind 3 to 5 mph.
Tuesday
Rain. High near 53. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 47. Chance of precipitation is 90%.
Wednesday
Rain. Cloudy, with a high near 54.
Wednesday Night
Rain. Cloudy, with a low around 48.
Thursday
Rain. Cloudy, with a high near 59.
Thursday Night
Rain likely. Mostly cloudy, with a low around 50.
Friday
Rain likely. Mostly cloudy, with a high near 61.
Friday Night
A chance of rain. Mostly cloudy, with a low around 46.
Saturday
A chance of rain. Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WA
 46.58°N 122.74°W (Elev. 600 ft)
8:01 pm PDT Mar 14, 2026
1am PDT Mar 15, 2026-6pm PDT Mar 21, 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