Julian County Park Weather Forecast

    • 42
    • 55

    Increasing Clouds

    • 43
    • 58

    Partly Sunny

    • 50
    • 71

    Sunny

    • 53
    • 79

    Sunny

    • 53
    • 80

    Mostly Sunny

    • 58
    • 80

    Mostly Sunny

Today 28 May San Diego County Mountains

Partly cloudy this morning. Becoming mostly sunny. Areas of fog this morning. Patchy fog this afternoon. Warmer. Highs 55 to 65. Areas of Winds west 15 to 25 Mph. Gusts to 35 Mph. Becoming 40 Mph this afternoon.

Tonight 28 May San Diego County Mountains

Mostly cloudy. Patchy fog in the evening. Areas of fog overnight. Lows 37 to 44. Areas of Winds west 20 to 30 Mph. Gusts to 45 Mph. Becoming 50 Mph overnight.

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  • Temperature Real-Time

Julian County Park Temperature Statistics

May Temperature

Ramona, Ramona Airport (18 miles)

  • Lowest 6 May, 2026

    39.9 °F

  • Average May

    62.5 °F

  • Highest 11 May, 2026

    90 °F

Climate (2021–Present)

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

    76.9 °F
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