Cahokia Weather Forecast

    • 78
    • 100

    Hot

    • 78
    • 99

    Hot

    • 80
    • 101

    Hot

    • 79
    • 101

    Hot

    • 76
    • 101

    Hot

    • 73
    • 98

    Slight Chance Thunderstorms

Today 1 Sep St. Clair

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds around 5 Mph.

Tonight 1 Sep St. Clair

Clear. Lows in the upper 70s. South Winds around 5 Mph. Heat index Values up to 103 early in the evening.

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Cahokia Temperature Statistics

September Temperature

St. Louis Downtown Airport (1.9 miles)

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  • Average September

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Climate (2021–2026)

St. Louis Downtown Airport (1.9 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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