Lake Jennings Weather Forecast

    • 58
    • 84

    Mostly Sunny

    • 62
    • 85

    Mostly Sunny

    • 67
    • 88

    Mostly Cloudy

    • 67
    • 88

    Chance Rain Showers

    • 66
    • 90

    Partly Sunny

    • 66
    • 92

    Mostly Sunny

    • 67
    • 92

    Mostly Sunny

Today 3 Sep San Diego County Inland Valleys

Sunny. Highs 81 to 86. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 3 Sep San Diego County Inland Valleys

Mostly clear. Lows 54 to 60. Areas of Winds west to 10 Mph this evening becoming light.

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Lake Jennings Temperature Statistics

September Temperature

Gillespie Field Airport (5 miles)

  • Lowest 1 September, 2026

    62.6 °F

  • Average September

    70 °F

  • Highest 1 September, 2026

    87.8 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
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