Ross Lake Weather Forecast

    • 71
    • 84

    Chance Rain Showers

    • 71
    • 92

    Mostly Sunny

    • 73
    • 94

    Mostly Sunny

    • 71
    • 96

    Mostly Sunny

    • 68
    • 93

    Mostly Sunny

    • 65
    • 89

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

Today 6 Sep San Diego County Inland Valleys

Cloudy with a slight chance of Showers this Morning, then partly cloudy with a chance of Showers this afternoon. Highs 85 to 90. Areas of Winds north to 10 Mph. Chance of measurable precipitation 50 percent.

Tonight 6 Sep San Diego County Inland Valleys

Partly cloudy. Lows 68 to 74. Areas of Winds northwest to 10 Mph this evening becoming light.

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  • Temperature Real-Time

Ross Lake Temperature Statistics

September Temperature

Fallbrook Community Airpark (6.2 miles)

  • Lowest 3 September, 2026

    57.2 °F

  • Average September

    68.7 °F

  • Highest 1 September, 2026

    86 °F

Climate (2021–2026)

Fallbrook Community Airpark (6.2 miles)

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  • Average Low 2021–2026

    53.9 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    74.5 °F
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