Julian County Park Weather Forecast

    • 70
    • 90

    Slight Chance Thunderstorms

    • 70
    • 90

    Becoming Sunny

    • 70
    • 91

    Sunny

    • 69
    • 91

    Mostly Sunny

    • 69
    • 91

    Mostly Sunny

    • 71
    • 91

    Mostly Sunny

    • 71
    • 92

    Mostly Sunny

Today 20 Aug San Diego County Mountains

Partly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Highs 89 to 98. Areas of Winds east to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 20 Aug San Diego County Mountains

Mostly clear. Cooler. Lows 64 to 74. Areas of Winds west to 10 Mph.

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Julian County Park Temperature Statistics

August Temperature

Ramona, Ramona Airport (18 miles)

  • Lowest 3 August, 2026

    55.9 °F

  • Average August

    75.2 °F

  • Highest 2 August, 2026

    98.1 °F

Climate (2021–2026)

Ramona, Ramona Airport (18 miles)

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  • Average Low 2021–2026

    51.6 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    76.8 °F
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