Red Mountain Reservoir Weather Forecast

    • 72
    • 100

    Hot

    • 72
    • 99

    Hot

    • 74
    • 99

    Hot

    • 71
    • 96

    Sunny

    • 71
    • 95

    Mostly Sunny

    • 67
    • 91

    Mostly Sunny

Today 4 Oct San Diego County Inland Valleys

Mostly sunny. Hot. Highs 101 to 104 in the western Valleys to 94 to 99 near the Foothills. Areas of Winds east 10 to 20 Mph with Gusts to 35 Mph.

Tonight 4 Oct San Diego County Inland Valleys

Mostly clear. Lows 70 to 74. Areas of Winds east 10 to 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Red Mountain Reservoir Temperature Statistics

October Temperature

Fallbrook Community Airpark (4.3 miles)

  • Lowest 1 October, 2026

    57.2 °F

  • Average October

    71.3 °F

  • Highest 1 October, 2026

    87.8 °F

Climate (2021–2026)

Fallbrook Community Airpark (4.3 miles)

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  • Average Low 2021–2026

    53.9 °F

  • Average 2021–2026

    62.2 °F

  • Average High 2021–2026

    74.5 °F
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