Fernbrook Weather Forecast

    • 70
    • 103

    Hot

    • 65
    • 97

    Hot

    • 60
    • 91

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

    • 55
    • 87

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

Today 10 Sep San Diego County Inland Valleys

Mostly sunny. Highs 96 to 101. Areas of Winds south to 10 Mph becoming west this afternoon.

Tonight 10 Sep San Diego County Inland Valleys

Mostly clear. Lows 68 to 73. Areas of Winds southwest to 10 Mph in the evening becoming light.

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Fernbrook Temperature Statistics

September Temperature

Ramona, Ramona Airport (4.3 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    75.1 °F

  • Highest 8 September, 2026

    100.9 °F

Climate (2021–2026)

Ramona, Ramona Airport (4.3 miles)

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  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    76.9 °F
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