Castle Rock Weather Forecast

    • 44
    • 75

    Increasing Clouds

    • 45
    • 74

    Partly Sunny

    • 53
    • 76

    Chance Rain Showers

    • 46
    • 72

    Slight Chance Rain Showers

    • 47
    • 72

    Chance Rain Showers

    • 47
    • 64

    Rain Showers Likely

Today 15 Jun Cowlitz County Lowlands

Sunny. Highs in the mid 70s. Winds light.

Tonight 15 Jun Cowlitz County Lowlands

Partly cloudy. Lows in the mid 40s. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

June Temperature

Southwest Washington Regional Airport (10.6 miles)

  • Lowest 2 June, 2025

    43 °F

  • Average June

    61.1 °F

  • Highest 8 June, 2025

    91.9 °F

Climate (2020–Present)

Southwest Washington Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.2 °F
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