Castle Rock Weather Forecast

    • 38
    • 50

    Chance Rain Showers

    • 45
    • 51

    Rain

    • 49
    • 54

    Rain

    • 49
    • 56

    Rain

    • 45
    • 57

    Rain

    • 39
    • 53

    Chance Rain

Today 20 Feb Cowlitz County Lowlands

Patchy fog this morning. Mostly cloudy with a 40 percent chance of rain Showers. Highs around 50. Winds light. Rainfall Amounts less than a tenth of an inch.

Tonight 20 Feb Cowlitz County Lowlands

Mostly cloudy. Patchy fog. A slight chance of rain after midnight. Lows in the upper 30s. Winds light. Chance of rain 20 percent.

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Castle Rock Temperature Statistics

February Temperature

Southwest Washington Regional Airport (10.6 miles)

  • Lowest 12 February, 2025

    18 °F

  • Average February

    37.6 °F

  • Highest 17 February, 2025

    51.1 °F

Climate (2020–Present)

Southwest Washington Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62 °F
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