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

72°F

22°C

Humidity 61%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Last update 19 Aug 12:09 PM PDT
Extended Forecast for

12 Miles WNW Mount St Helens WA

  • This Afternoon

    This Afternoon: Mostly cloudy early, then gradual clearing, with a high near 75. Calm wind.

    High: 75 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Mostly cloudy, with a high near 78. Calm wind.

    High: 78 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 11am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 65.

    High: 65 °F

    Chance
    Showers and
    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 56.

    Low: 56 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 68.

    High: 68 °F

    Decreasing
    Clouds

Detailed Forecast

This Afternoon
Mostly cloudy early, then gradual clearing, with a high near 75. Calm wind.
Tonight
Partly cloudy, with a low around 59. Calm wind.
Thursday
Sunny, with a high near 80. Light and variable wind.
Thursday Night
Mostly clear, with a low around 63. Calm wind.
Friday
Mostly cloudy, with a high near 78. Calm wind.
Friday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 59.
Saturday
A 30 percent chance of showers before 11am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 65.
Saturday Night
Increasing clouds, with a low around 56.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles WNW Mount St Helens WA
 46.23°N 122.44°W (Elev. 1240 ft)
Last Update:
12:41 pm PDT Aug 19, 2026
Forecast Valid:
12pm PDT Aug 19, 2026-6pm PDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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