Castle Rock Weather Forecast

    • 56
    • 65

    Rain

    • 56
    • 65

    Rain Showers

    • 57
    • 63

    Chance Rain

    • 56
    • 62

    Rain

    • 55
    • 62

    Chance Rain

    • 55
    • 61

    Chance Rain

    • 54
    • 62

    Chance Rain

Today 30 Dec San Miguel and Santa Rosa Islands

Mostly cloudy. A 20 percent chance of Showers in the morning. Highs in the mid 60s to around 70.

Tonight 30 Dec San Miguel and Santa Rosa Islands

Cloudy. A slight chance of Showers in the Evening, then a chance of rain after midnight. Lows in the mid 50s. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

December Temperature

Lompoc, Lompoc Airport (42.3 miles)

  • Lowest 28 December, 2025

    37.4 °F

  • Average December

    58.1 °F

  • Highest 10 December, 2025

    82.9 °F

Climate (2020–Present)

Lompoc, Lompoc Airport (42.3 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57 °F

  • Average High 2020–2025

    67.4 °F
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