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

44°F

7°C

Humidity 95%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 19 Apr 01:09 AM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 47. East southeast wind 9 to 11 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63. East southeast wind 6 to 13 mph.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 50. North northwest wind around 6 mph becoming east after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 64. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 64 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 44. West wind 5 to 9 mph becoming calm after midnight.

    Low: 44 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain, mainly after 11am. High near 48. Chance of precipitation is 80%.

    High: 48 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Rain

  • Wednesday

    Wednesday: Rain. Snow level 5100 feet. Cloudy, with a high near 42.

    High: 42 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 8pm, then rain and snow likely between 8pm and 2am, then a chance of rain after 2am. Snow level 5000 feet lowering to 4500 feet after midnight . Mostly cloudy, with a low around 38.

    Low: 38 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 47. East southeast wind 9 to 11 mph.
Sunday
Partly sunny, with a high near 63. East southeast wind 6 to 13 mph.
Sunday Night
Mostly cloudy, with a low around 50. North northwest wind around 6 mph becoming east after midnight.
Monday
Mostly cloudy, with a high near 64. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 44. West wind 5 to 9 mph becoming calm after midnight.
Tuesday
Rain, mainly after 11am. High near 48. Chance of precipitation is 80%.
Tuesday Night
Rain. Low around 40. Chance of precipitation is 80%.
Wednesday
Rain. Snow level 5100 feet. Cloudy, with a high near 42.
Wednesday Night
Rain likely before 8pm, then rain and snow likely between 8pm and 2am, then a chance of rain after 2am. Snow level 5000 feet lowering to 4500 feet after midnight . Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Snow level 4000 feet rising to 5000 feet in the afternoon. Partly sunny, with a high near 49.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 56.
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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:
1:41 am PDT Apr 19, 2026
Forecast Valid:
1am PDT Apr 19, 2026-6pm PDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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