Palomar Mountain State Park Weather Forecast

    • 45
    • 52

    Becoming Sunny

    • 51
    • 63

    Sunny

    • 53
    • 68

    Sunny

    • 55
    • 70

    Mostly Sunny

    • 53
    • 68

    Mostly Sunny

    • 50
    • 62

    Partly Sunny

Today 15 Oct San Diego County Mountains

Patchy fog this morning. Partly cloudy with a slight chance of Showers this Morning, then mostly sunny this afternoon. Not as cool. Highs 54 to 62. Areas of Winds west 15 to 25 Mph with Gusts to 45 Mph. Becoming 10 to 15 Mph with Gusts to 30 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 15 Oct San Diego County Mountains

Mostly clear. Lows 36 to 46. Areas of Winds northwest 10 to 15 Mph with Gusts to 25 Mph becoming northeast overnight.

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Palomar Mountain State Park Temperature Statistics

October Temperature

Fallbrook Community Airpark (19.9 miles)

  • Lowest 12 October, 2025

    53.6 °F

  • Average October

    64.1 °F

  • Highest 10 October, 2025

    84.2 °F

Climate (2020–Present)

Fallbrook Community Airpark (19.9 miles)

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  • Average Low 2020–2025

    53.4 °F

  • Average 2020–2025

    61.7 °F

  • Average High 2020–2025

    74.1 °F
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