Red Mountain Reservoir Weather Forecast

    • 51
    • 67

    Gradual Clearing

    • 59
    • 79

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

    • 61
    • 88

    Mostly Sunny

    • 60
    • 88

    Patchy Fog

    • 56
    • 81

    Patchy Fog

    • 55
    • 77

    Patchy Fog

Today 18 May San Diego County Inland Valleys

Cloudy with patchy fog this morning. Becoming partly cloudy. Highs around 70 in the western Valleys to 64 to 69 near the Foothills. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 18 May San Diego County Inland Valleys

Partly cloudy. Patchy fog overnight. Lows 45 to 53. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Red Mountain Reservoir Temperature Statistics

May Temperature

Fallbrook Community Airpark (4.3 miles)

  • Lowest 4 May, 2025

    50 °F

  • Average May

    61 °F

  • Highest 10 May, 2025

    96.8 °F

Climate (2020–Present)

Fallbrook Community Airpark (4.3 miles)

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  • Average Low 2020–2025

    53.5 °F

  • Average 2020–2025

    61.9 °F

  • Average High 2020–2025

    74.3 °F
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