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.

Overcast

58°F

14°C

Humidity 86%
Wind Speed WSW 10 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Sep 05:53 AM PDT
Extended Forecast for

Union WA

  • Today

    Today: Sunny, with a high near 68. Southwest wind 7 to 10 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 52. Southwest wind 5 to 10 mph becoming light south southwest after midnight.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.

    High: 69 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. Southwest wind around 6 mph becoming calm after midnight.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 68. Southwest wind 7 to 10 mph.
Tonight
Increasing clouds, with a low around 52. Southwest wind 5 to 10 mph becoming light south southwest after midnight.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 52. Southwest wind around 6 mph becoming calm after midnight.
Sunday
Sunny, with a high near 71. Light and variable wind.
Sunday Night
Mostly clear, with a low around 52.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 67.
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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:
11:26 pm PDT Sep 17, 2026
Forecast Valid:
6am PDT Sep 18, 2026-6pm PDT Sep 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation