Red Mountain Reservoir Weather Forecast

    • 61
    • 84

    Increasing Clouds

    • 61
    • 83

    Partly Sunny

    • 59
    • 82

    Partly Sunny

    • 58
    • 81

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 55
    • 75

    Mostly Sunny

Today 13 Jun San Diego County Inland Valleys

Mostly sunny. Highs 81 to 86 in the western Valleys to 87 to 92 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph this afternoon.

Tonight 13 Jun San Diego County Inland Valleys

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 61 to 65. 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

June Temperature

Fallbrook Community Airpark (4.3 miles)

  • Lowest 9 June, 2026

    55.4 °F

  • Average June

    65.2 °F

  • Highest 11 June, 2026

    84.2 °F

Climate (2021–Present)

Fallbrook Community Airpark (4.3 miles)

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  • Average Low 2021–2026

    53.8 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    74.5 °F
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