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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Shelton, Shelton Sanderson Field (KSHN)

Lat: 47.23806°NLon: 123.14083°WElev: 269.0ft.

Clear

66°F

19°C

Humidity 63%
Wind Speed SW 12 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Sep 05:35 PM PDT
Extended Forecast for

Union WA

  • Tonight

    Tonight: Increasing clouds, with a low around 51. Southwest wind 5 to 8 mph becoming calm after midnight.

    Low: 51 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 70. Light and variable wind.

    High: 70 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 51. Light and variable wind.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Calm wind.

    High: 71 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. Light and variable wind.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 51. Southwest wind 5 to 8 mph becoming calm after midnight.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 70. Light and variable wind.
Saturday Night
Increasing clouds, with a low around 51. Light and variable wind.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Calm wind.
Sunday Night
Mostly clear, with a low around 51. Light and variable wind.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 66.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 51.
Friday
A chance of rain. Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union WA
 47.35°N 123.1°W (Elev. 328 ft)
Last Update:
1:27 pm PDT Sep 18, 2026
Forecast Valid:
5pm PDT Sep 18, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

Radar & Satellite Image

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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