Festus Weather Forecast

    • 77
    • 97

    Slight Chance Thunderstorms

    • 77
    • 97

    Hot

    • 76
    • 95

    Slight Chance Thunderstorms

    • 75
    • 95

    Slight Chance Thunderstorms

    • 75
    • 96

    Mostly Sunny

    • 76
    • 96

    Mostly Sunny

Today 23 Jul Jefferson

Sunny, hot with Highs in the upper 90s. South Winds around 5 Mph. Heat index Values up to 112.

Tonight 23 Jul Jefferson

Clear with Lows in the upper 70s. South Winds around 5 Mph. Heat index Values up to 109 early in the evening.

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Festus Temperature Statistics

July Temperature

St. Louis Downtown Airport (26.7 miles)

  • Lowest 2 July, 2025

    63.6 °F

  • Average July

    81.6 °F

  • Highest 11 July, 2025

    97.6 °F

Climate (2020–Present)

St. Louis Downtown Airport (26.7 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    68.3 °F
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