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

51°F

11°C

Humidity 69%
Wind Speed ENE 1 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 17 Apr 08:09 PM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. Light and variable wind becoming southeast 5 to 9 mph in the evening.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 57. East southeast wind 6 to 9 mph becoming south in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47. South wind 5 to 9 mph becoming east southeast after midnight.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 62. East southeast wind 6 to 9 mph becoming south in the afternoon.

    High: 62 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 49. West northwest wind around 6 mph becoming east northeast after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of rain after 11am. Partly sunny, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 54.

    High: 54 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. Light and variable wind becoming southeast 5 to 9 mph in the evening.
Saturday
Mostly sunny, with a high near 57. East southeast wind 6 to 9 mph becoming south in the afternoon.
Saturday Night
Mostly cloudy, with a low around 47. South wind 5 to 9 mph becoming east southeast after midnight.
Sunday
Mostly cloudy, with a high near 62. East southeast wind 6 to 9 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 49. West northwest wind around 6 mph becoming east northeast after midnight.
Monday
A 20 percent chance of rain after 11am. Partly sunny, with a high near 62.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45.
Tuesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 54.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 42.
Wednesday
Rain. Snow level 5500 feet lowering to 5000 feet. Mostly cloudy, with a high near 43.
Wednesday Night
Rain and snow likely. Snow level 5000 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 38.
Thursday
A chance of rain and snow. Snow level 4100 feet rising to 4800 feet in the afternoon. Partly sunny, with a high near 46.
Thursday Night
A slight chance of rain. Snow level 5200 feet. Partly cloudy, with a low around 39.
Friday
A slight chance of rain. Snow level 5000 feet rising to 5700 feet in the afternoon. Mostly sunny, with a high near 55.
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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:
7:41 pm PDT Apr 17, 2026
Forecast Valid:
8pm PDT Apr 17, 2026-6pm PDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation