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

54°F

12°C

Humidity 71%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 23 Apr 07:09 PM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Tonight

    Tonight: Mostly clear, with a low around 36. North northwest wind around 6 mph becoming light and variable.

    Low: 36 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 50. East northeast wind 6 to 9 mph becoming north northwest in the afternoon.

    High: 50 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 37. East wind 6 to 9 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 51. East wind 5 to 7 mph becoming north northwest in the afternoon.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. North northwest wind 5 to 9 mph becoming east northeast after midnight.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of rain and snow showers between 11am and 2pm, then a chance of rain showers after 2pm. Snow level rising to 4800 feet in the afternoon. Mostly sunny, with a high near 52. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 52 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before 11pm. Snow level 4900 feet. Partly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: A chance of rain, mainly after 11am. Snow level 4600 feet. Partly sunny, with a high near 49.

    High: 49 °F

    Chance Rain

  • Monday Night

    Monday Night: A slight chance of rain before 11pm. Snow level 5200 feet lowering to 4700 feet after midnight . Partly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 36. North northwest wind around 6 mph becoming light and variable.
Friday
Increasing clouds, with a high near 50. East northeast wind 6 to 9 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around 37. East wind 6 to 9 mph.
Saturday
Sunny, with a high near 51. East wind 5 to 7 mph becoming north northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 37. North northwest wind 5 to 9 mph becoming east northeast after midnight.
Sunday
A chance of rain and snow showers between 11am and 2pm, then a chance of rain showers after 2pm. Snow level rising to 4800 feet in the afternoon. Mostly sunny, with a high near 52. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday Night
A 30 percent chance of rain before 11pm. Snow level 4900 feet. Partly cloudy, with a low around 38.
Monday
A chance of rain, mainly after 11am. Snow level 4600 feet. Partly sunny, with a high near 49.
Monday Night
A slight chance of rain before 11pm. Snow level 5200 feet lowering to 4700 feet after midnight . Partly cloudy, with a low around 39.
Tuesday
A slight chance of rain after 11am. Snow level 4400 feet rising to 5200 feet in the afternoon. Partly sunny, with a high near 52.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
A slight chance of rain. Mostly sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
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:
6:41 pm PDT Apr 23, 2026
Forecast Valid:
7pm PDT Apr 23, 2026-6pm PDT Apr 30, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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