Palomar Mountain State Park Weather Forecast

    • 46
    • 59

    Mostly Cloudy

    • 43
    • 52

    Chance Rain Showers

    • 44
    • 46

    Chance Rain Showers

    • 36
    • 48

    Chance Rain Showers

    • 37
    • 51

    Partly Sunny

    • 40
    • 53

    Partly Sunny

    • 44
    • 57

    Partly Sunny

Today 21 Jan San Diego County Mountains

Mostly cloudy. Highs 60 to 69. Light Winds.

Tonight 21 Jan San Diego County Mountains

Mostly cloudy. Lows 42 to 49. Areas of Winds south to 10 Mph becoming west 10 Mph overnight.

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  • Temperature Real-Time

Palomar Mountain State Park Temperature Statistics

January Temperature

Fallbrook Community Airpark (19.9 miles)

  • Lowest 8 January, 2026

    44.6 °F

  • Average January

    59.6 °F

  • Highest 14 January, 2026

    84.2 °F

Climate (2021–Present)

Fallbrook Community Airpark (19.9 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    61.8 °F

  • Average High 2021–2026

    74.1 °F
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