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

47°F

8°C

Humidity 89%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 27 Apr 01:09 AM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Overnight

    Overnight: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of rain before 2pm, then a slight chance of rain after 5pm. Snow level 4300 feet rising to 5200 feet in the afternoon. Mostly sunny, with a high near 47. Light south southwest wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    High: 47 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 20 percent chance of rain before 8pm. Snow level 5300 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 39. West wind 5 to 9 mph becoming calm in the evening.

    Low: 39 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and snow before 11am. Snow level 4200 feet. Mostly cloudy, with a high near 45. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. West northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 36. Calm wind.
Monday
A slight chance of rain before 2pm, then a slight chance of rain after 5pm. Snow level 4300 feet rising to 5200 feet in the afternoon. Mostly sunny, with a high near 47. Light south southwest wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of rain before 8pm. Snow level 5300 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 39. West wind 5 to 9 mph becoming calm in the evening.
Tuesday
A slight chance of rain and snow before 11am. Snow level 4200 feet. Mostly cloudy, with a high near 45. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 36. West northwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 56.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 67.
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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:
1:42 am PDT Apr 27, 2026
Forecast Valid:
2am PDT Apr 27, 2026-6pm PDT May 3, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation