Castle Rock Weather Forecast

    • 48
    • 59

    Rain Showers

    • 44
    • 57

    Rain Showers

    • 39
    • 56

    Rain

    • 44
    • 60

    Mostly Cloudy

    • 46
    • 62

    Chance Rain

    • 44
    • 60

    Chance Rain

Today 5 Nov Cowlitz County Lowlands

Rain this Morning, then Showers with a slight chance of Thunderstorms this afternoon. Highs in the upper 50s. South wind 10 to 15 Mph. Chance of rain near 100 percent. Rainfall Amounts a quarter to a half of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 5 Nov Cowlitz County Lowlands

Showers with a chance of Thunderstorms in the Evening, then rain with a slight chance of Thunderstorms after midnight. Lows in the upper 40s. South wind 10 to 15 Mph. Chance of rain near 100 percent. Rainfall Amounts a quarter to a half of an Inch, except higher Amounts possible in Thunderstorms.

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Castle Rock Temperature Statistics

November Temperature

Southwest Washington Regional Airport (10.6 miles)

  • Lowest 2 November, 2025

    45 °F

  • Average November

    50.5 °F

  • Highest 1 November, 2025

    60.1 °F

Climate (2020–Present)

Southwest Washington Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
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