Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

50°F

10°C

Humidity 100%
Wind Speed ENE 0 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 50°F (10°C)
Visibility NA
Last update 19 Mar 10:15 AM PDT
Extended Forecast for

4 Miles SSW Onalaska WA

  • Today

    Today: Rain, mainly before 5pm.  High near 58. South wind 3 to 5 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Rain

  • Tonight

    Tonight: Rain.  Low around 50. South wind 3 to 5 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain

  • Friday

    Friday: Rain.  High near 56. South wind 3 to 5 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain

  • Friday Night

    Friday Night: Rain likely before 11pm, then a slight chance of showers after 11pm.  Mostly cloudy, with a low around 35. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Rain Likely
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 11am.  Mostly sunny, with a high near 50. Light west northwest wind.

    High: 50 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers after 11am.  Mostly cloudy, with a high near 57.

    High: 57 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Rain, mainly before 5pm. High near 58. South wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Low around 50. South wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 56. South wind 3 to 5 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely before 11pm, then a slight chance of showers after 11pm. Mostly cloudy, with a low around 35. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 30 percent chance of showers, mainly before 11am. Mostly sunny, with a high near 50. Light west northwest wind.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Partly sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
A slight chance of showers after 11am. Mostly cloudy, with a high near 57.
Monday Night
A chance of rain. Mostly cloudy, with a low around 44.
Tuesday
Rain. Cloudy, with a high near 52.
Tuesday Night
Rain. Mostly cloudy, with a low around 35.
Wednesday
Rain. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Onalaska WA
 46.52°N 122.75°W (Elev. 423 ft)
7:17 am PDT Mar 19, 2026
10am PDT Mar 19, 2026-6pm PDT Mar 25, 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