Castle Rock Weather Forecast

    • 44
    • 52

    Rain

    • 41
    • 50

    Rain

    • 36
    • 49

    Rain

    • 34
    • 52

    Partly Sunny

    • 36
    • 51

    Mostly Cloudy

    • 38
    • 50

    Rain Likely

    • 33
    • 47

    Rain

Today 7 Feb Cowlitz County Lowlands

Rain. Highs in the lower 50s. South wind 5 to 10 Mph. Chance of rain near 100 percent. Rainfall Amounts around a quarter of an inch.

Tonight 7 Feb Cowlitz County Lowlands

Cloudy. Rain Likely, mainly this evening. Lows in the mid 40s. South wind 5 to 10 Mph. Chance of rain 70 percent. Rainfall Amounts around a quarter of an inch.

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  • Temperature Real-Time

Castle Rock Temperature Statistics

February Temperature

Southwest Washington Regional Airport (10.6 miles)

  • Lowest 4 February, 2026

    37.9 °F

  • Average February

    47.7 °F

  • Highest 4 February, 2026

    61 °F

Climate (2021–Present)

Southwest Washington Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.4 °F
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