Castle Rock Weather Forecast

    • 63
    • 69

    Breezy

    • 64
    • 72

    Breezy

    • 64
    • 72

    Patchy Fog

    • 64
    • 71

    Partly Sunny

    • 65
    • 72

    Partly Sunny

    • 65
    • 72

    Mostly Sunny

Today 28 Sep San Miguel and Santa Rosa Islands

Sunny. Highs in the mid 60s to mid 70s. Northwest Winds 20 to 35 Mph.

Tonight 28 Sep San Miguel and Santa Rosa Islands

Partly cloudy except for patchy low Clouds and fog after midnight. Lows in the upper 50s to mid 60s. Northwest Winds 20 to 35 Mph.

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Castle Rock Temperature Statistics

September Temperature

Lompoc, Lompoc Airport (42.3 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    65.2 °F

  • Highest 9 September, 2026

    98.1 °F

Climate (2021–2026)

Lompoc, Lompoc Airport (42.3 miles)

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  • Average Low 2021–2026

    48.5 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    68.2 °F
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