National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

CASTLE ROCK (TR950)

Lat: 46.27139°NLon: 122.89194°WElev: 213.0ft.

NA

35°F

2°C

Humidity 100%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 12 Oct 05:09 AM PDT
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Columbus Day

    Columbus Day: Sunny, with a high near 49. East southeast wind around 5 mph becoming calm in the morning.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 40. Light and variable wind.

    Low: 40 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. Light and variable wind.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy fog after 2pm. Otherwise, partly sunny, with a high near 53. Light and variable wind.

    High: 53 °F

    Partly Sunny
    then Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Patchy fog before 8pm. Otherwise, partly cloudy, with a low around 47.

    Low: 47 °F

    Patchy Fog
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Columbus Day
Sunny, with a high near 49. East southeast wind around 5 mph becoming calm in the morning.
Tonight
Increasing clouds, with a low around 40. Light and variable wind.
Tuesday
Partly sunny, with a high near 49. Light and variable wind.
Tuesday Night
Mostly cloudy, with a low around 45. Light and variable wind.
Wednesday
Patchy fog after 2pm. Otherwise, partly sunny, with a high near 53. Light and variable wind.
Wednesday Night
Patchy fog before 8pm. Otherwise, partly cloudy, with a low around 47.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 52.
Friday
Mostly sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 48.
Saturday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 50.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Sunday
A slight chance of rain. Snow level 5900 feet. Partly sunny, with a high near 49.
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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:
5:41 am PDT Oct 12, 2026
Forecast Valid:
6am PDT Oct 12, 2026-6pm PDT Oct 18, 2026
 
Forecast Discussion
 
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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