Festus Weather Forecast

    • 70
    • 92

    Sunny

    • 74
    • 95

    Mostly Sunny

    • 76
    • 99

    Hot

    • 76
    • 98

    Hot

    • 72
    • 96

    Thunderstorms Likely

    • 70
    • 87

    Chance Thunderstorms

    • 69
    • 87

    Chance Thunderstorms

Today 8 Aug Jefferson

Sunny. Highs in the lower 90s. South Winds around 5 Mph. Heat index Values up to 100.

Tonight 8 Aug Jefferson

Clear. Lows around 70. South Winds around 5 Mph.

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Festus Temperature Statistics

August Temperature

St. Louis Downtown Airport (26.7 miles)

  • Lowest 3 August, 2026

    63.6 °F

  • Average August

    75.1 °F

  • Highest 4 August, 2026

    89.7 °F

Climate (2021–2026)

St. Louis Downtown Airport (26.7 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    69.3 °F
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