Julian County Park Weather Forecast

    • 58
    • 78

    Mostly Sunny

    • 64
    • 78

    Chance Rain Showers

    • 63
    • 78

    Chance Rain Showers

    • 63
    • 81

    Partly Sunny

    • 65
    • 85

    Mostly Sunny

    • 65
    • 86

    Mostly Sunny

Today 4 Sep San Diego County Mountains

Sunny. Highs 76 to 85. Areas of Winds west 10 to 20 Mph. Gusts to 30 Mph. Becoming 35 Mph in the afternoon.

Tonight 4 Sep San Diego County Mountains

Mostly clear. Lows 52 to 62. Areas of Winds west 10 to 20 Mph. Gusts to 35 Mph. Becoming 30 Mph overnight.

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Julian County Park Temperature Statistics

September Temperature

Ramona, Ramona Airport (18 miles)

  • Lowest 1 September, 2026

    54 °F

  • Average September

    69.9 °F

  • Highest 1 September, 2026

    88 °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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