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

63°F

17°C

Humidity 88%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 59°F (15°C)
Visibility NA
Last update 20 Aug 12:09 AM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Overnight

    Overnight: Mostly clear, with a low around 56. Light east wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

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

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 62. Calm wind becoming southeast around 5 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 70. Calm wind.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers before 11am. Partly sunny, with a high near 56.

    High: 56 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Sunday Night

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

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 56. Light east wind.
Thursday
Sunny, with a high near 71. Light and variable wind.
Thursday Night
Increasing clouds, with a low around 62. Calm wind becoming southeast around 5 mph.
Friday
Mostly cloudy, with a high near 70. Calm wind.
Friday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 55. Calm wind.
Saturday
A 40 percent chance of showers before 11am. Partly sunny, with a high near 56.
Saturday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 52.
Sunday
Partly sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 60.
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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:
12:41 am PDT Aug 20, 2026
Forecast Valid:
12am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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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