Palomar Mountain State Park Weather Forecast

    • 36
    • 45

    Chance Rain Showers

    • 37
    • 49

    Partly Sunny

    • 45
    • 60

    Mostly Sunny

    • 47
    • 61

    Slight Chance Rain Showers

    • 46
    • 56

    Mostly Sunny

    • 50
    • 65

    Mostly Sunny

Today 26 Apr San Diego County Mountains

Cloudy. Showers likely. Highs 47 to 57. Areas of Winds west 30 to 40 Mph with Gusts to 60 Mph. Becoming 20 to 30 Mph with Gusts to 45 Mph this afternoon. Chance of measurable precipitation 70 percent.

Tonight 26 Apr San Diego County Mountains

Mostly cloudy with a slight chance of Showers. Lows 33 to 41. Areas of Winds west 20 to 30 Mph with Gusts to 45 Mph. Chance of measurable precipitation 20 percent.

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Palomar Mountain State Park Temperature Statistics

April Temperature

Fallbrook Community Airpark (19.9 miles)

  • Lowest 2 April, 2026

    50 °F

  • Average April

    62.4 °F

  • Highest 4 April, 2026

    87.8 °F

Climate (2021–Present)

Fallbrook Community Airpark (19.9 miles)

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  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    74.5 °F
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