Fernbrook Weather Forecast

    • 50
    • 77

    Partly Sunny

    • 52
    • 76

    Mostly Cloudy

    • 54
    • 69

    Rain Showers

    • 55
    • 68

    Rain Showers

    • 52
    • 68

    Rain Showers

    • 49
    • 67

    Rain Showers Likely

Today 21 Dec San Diego County Inland Valleys

Partly cloudy in the morning. Becoming mostly sunny. Highs 70 to 74 in the western Valleys to 73 to 78 near the Foothills. Light Winds.

Tonight 21 Dec San Diego County Inland Valleys

Partly cloudy. Lows 44 to 52 in wind Sheltered Areas to 49 to 55 in warmer Locations. Light Winds becoming east to 10 Mph overnight.

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  • Temperature Real-Time

Fernbrook Temperature Statistics

December Temperature

Ramona, Ramona Airport (4.3 miles)

  • Lowest 1 December, 2025

    44.1 °F

  • Average December

    67.8 °F

  • Highest 10 December, 2025

    87.1 °F

Climate (2020–Present)

Ramona, Ramona Airport (4.3 miles)

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  • Average Low 2020–2025

    51.1 °F

  • Average 2020–2025

    64 °F

  • Average High 2020–2025

    76.5 °F
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