Julian County Park Weather Forecast

    • 62
    • 81

    Increasing Clouds

    • 62
    • 82

    Partly Sunny

    • 56
    • 75

    Chance Rain Showers

    • 51
    • 69

    Slight Chance Rain Showers

    • 56
    • 74

    Mostly Sunny

    • 57
    • 79

    Sunny

Today 25 Sep San Diego County Mountains

Mostly sunny. Highs 80 to 88. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 25 Sep San Diego County Mountains

Mostly clear in the evening. Becoming partly cloudy. Lows 56 to 65. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph in the evening.

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Julian County Park Temperature Statistics

September Temperature

Ramona, Ramona Airport (18 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    73.1 °F

  • Highest 9 September, 2026

    104 °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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