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

CASTLE ROCK (TR950)

Lat: 46.27139°NLon: 122.89194°WElev: 213.0ft.

NA

58°F

14°C

Humidity 43%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 16 Apr 05:09 PM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. West wind 5 to 9 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 45. Calm wind.

    High: 45 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Calm wind becoming southeast 5 to 8 mph after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 55. Southeast wind 6 to 9 mph.

    High: 55 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 45. Southeast wind 5 to 9 mph.

    Low: 45 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 30 percent chance of rain. Mostly cloudy, with a high near 59.

    High: 59 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: A chance of rain after 11am. Partly sunny, with a high near 60.

    High: 60 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 29. West wind 5 to 9 mph becoming calm in the evening.
Friday
Increasing clouds, with a high near 45. Calm wind.
Friday Night
Mostly cloudy, with a low around 38. Calm wind becoming southeast 5 to 8 mph after midnight.
Saturday
Partly sunny, with a high near 55. Southeast wind 6 to 9 mph.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 45. Southeast wind 5 to 9 mph.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 59.
Sunday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 46.
Monday
A chance of rain after 11am. Partly sunny, with a high near 60.
Monday Night
A chance of rain. Mostly cloudy, with a low around 45.
Tuesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 50.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 42.
Wednesday
Rain likely. Snow level 5500 feet. Mostly cloudy, with a high near 44.
Wednesday Night
A chance of rain and snow. Snow level 5400 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 38.
Thursday
A chance of rain and snow. Snow level 3900 feet rising to 4600 feet in the afternoon. Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NW Mount St Helens WA
 46.31°N 122.34°W (Elev. 3691 ft)
Last Update:
4:41 pm PDT Apr 16, 2026
Forecast Valid:
5pm PDT Apr 16, 2026-6pm PDT Apr 23, 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