Rend Lake Weather Forecast

    • 68
    • 85

    Mostly Sunny

    • 67
    • 87

    Mostly Sunny

    • 72
    • 89

    Mostly Sunny

    • 72
    • 88

    Rain Showers Likely

    • 73
    • 87

    Chance Thunderstorms

    • 73
    • 88

    Chance Thunderstorms

Today 3 Aug Franklin

Patchy fog this morning. Sunny. Highs in the mid 80s. Northeast Winds around 5 Mph.

Tonight 3 Aug Franklin

Clear after midnight. Lows in the lower 60s. East Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Rend Lake Temperature Statistics

August Temperature

Mount Vernon Airport (18.6 miles)

  • Lowest 1 August, 2026

    69.1 °F

  • Average August

    71.5 °F

  • Highest 1 August, 2026

    75.9 °F

Climate (2021–2026)

Mount Vernon Airport (18.6 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    69.1 °F
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