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

Southwest Washington Regional Airport (KKLS)

Lat: 46.11553°NLon: 122.89273°WElev: 13.0ft.

Partly Cloudy

48°F

9°C

Humidity 93%
Wind Speed NW 5 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 20 Mar 10:10 PM PDT
Extended Forecast for

Kelso WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Northwest wind around 6 mph.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54. Northwest wind 3 to 8 mph.

    High: 54 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 33 °F

    Partly Cloudy
    then Frost

  • Sunday

    Sunday: Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 57. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 57 °F

    Frost then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37. North northwest wind 5 to 9 mph.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. Cloudy, with a high near 57.

    High: 57 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. Northwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 54. Northwest wind 3 to 8 mph.
Saturday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 8 mph becoming calm in the evening.
Sunday
Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 57. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 37. North northwest wind 5 to 9 mph.
Monday
Mostly cloudy, with a high near 57.
Monday Night
A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 43.
Tuesday
Rain. Cloudy, with a high near 57.
Tuesday Night
Rain. Mostly cloudy, with a low around 43.
Wednesday
Rain likely. Mostly cloudy, with a high near 54.
Wednesday Night
A chance of rain and snow. Snow level 2900 feet lowering to 1600 feet after midnight . Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 35.
Friday
Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kelso WA
 46.12°N 122.91°W (Elev. 52 ft)
Last Update:
9:42 pm PDT Mar 20, 2026
Forecast Valid:
10pm PDT Mar 20, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation