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

Southwest Washington Regional Airport (KKLS)

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

Clear

81°F

27°C

Humidity 30%
Wind Speed W 8 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 May 04:35 PM PDT
Extended Forecast for

Kelso WA

  • Tonight

    Tonight: Mostly clear, with a low around 51. North northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77. Calm wind becoming northwest 5 to 8 mph in the morning.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 73. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 73 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. West northwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 18 mph.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Rain

  • Memorial Day

    Memorial Day: Rain, mainly after 11am. Mostly cloudy, with a high near 60.

    High: 60 °F

    Rain

  • Monday Night

    Monday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 51. North northwest wind 5 to 7 mph becoming calm after midnight.
Friday
Sunny, with a high near 77. Calm wind becoming northwest 5 to 8 mph in the morning.
Friday Night
Mostly cloudy, with a low around 49. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 73. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 46. West northwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 18 mph.
Sunday
Partly sunny, with a high near 74.
Sunday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 51.
Memorial Day
Rain, mainly after 11am. Mostly cloudy, with a high near 60.
Monday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 46.
Tuesday
A chance of rain. Partly sunny, with a high near 63.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 47.
Wednesday
A slight chance of rain. Partly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
A slight chance of rain. Partly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kelso WA
 46.13°N 122.88°W (Elev. 400 ft)
Last Update:
4:41 pm PDT May 21, 2026
Forecast Valid:
4pm PDT May 21, 2026-6pm PDT May 28, 2026
 
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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