Castle Rock Weather Forecast

    • 53
    • 66

    Chance Rain

    • 54
    • 65

    Slight Chance Rain

    • 55
    • 64

    Breezy

    • 56
    • 66

    Partly Sunny

    • 56
    • 68

    Partly Sunny

    • 56
    • 66

    Mostly Cloudy

    • 55
    • 65

    Mostly Sunny

Today 31 Mar San Miguel and Santa Rosa Islands

Low Clouds and fog. A chance of rain in the afternoon. Highs in the mid to upper 60s. Chance of precipitation 50 percent.

Tonight 31 Mar San Miguel and Santa Rosa Islands

Mostly cloudy. A 40 percent chance of rain in the evening. Lows in the 50s to around 60.

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  • Temperature Real-Time

Castle Rock Temperature Statistics

March Temperature

Lompoc, Lompoc Airport (42.3 miles)

  • Lowest 7 March, 2026

    42.1 °F

  • Average March

    61.3 °F

  • Highest 18 March, 2026

    93 °F

Climate (2021–Present)

Lompoc, Lompoc Airport (42.3 miles)

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  • Average Low 2021–2026

    48.5 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    67.8 °F
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