Julian County Park Weather Forecast

    • 65
    • 88

    Sunny

    • 62
    • 86

    Sunny

    • 59
    • 82

    Sunny

    • 57
    • 82

    Sunny

    • 57
    • 81

    Sunny

    • 61
    • 82

    Mostly Sunny

Today 11 Sep San Diego County Mountains

Sunny. Highs 86 to 95. Areas of Winds west 10 to 20 Mph with Gusts to 30 Mph.

Tonight 11 Sep San Diego County Mountains

Mostly clear. Cooler. Lows 59 to 69. Areas of Winds west 10 to 20 Mph with Gusts to 35 Mph.

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Julian County Park Temperature Statistics

September Temperature

Ramona, Ramona Airport (18 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 (18 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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