Lake Forest Weather Forecast

    • 70
    • 93

    Chance Thunderstorms

    • 69
    • 89

    Rain Showers

    • 70
    • 92

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 69
    • 93

    Mostly Sunny

Today 11 Sep Madison

Mostly sunny after Midnight, then mostly cloudy with a slight chance of Showers and Thunderstorms early this afternoon. Mostly cloudy with a chance of Showers and Thunderstorms early. Highs in the lower 90s. Light and variable Winds. Chance of rain 40 percent. Heat index Readings 99 to 104.

Tonight 11 Sep Madison

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows around 70. Light and variable Winds. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

September Temperature

Huntsville, Huntsville International / Jones Field (2.5 miles)

  • Lowest 1 September, 2026

    71.7 °F

  • Average September

    84 °F

  • Highest 6 September, 2026

    99.6 °F

Climate (2021–2026)

Huntsville, Huntsville International / Jones Field (2.5 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    74.7 °F
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