Cahokia Weather Forecast

    • 66
    • 94

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

    • 63
    • 88

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

    • 74
    • 95

    Mostly Sunny

    • 76
    • 98

    Hot

Today 26 Aug St. Clair

Sunny. Highs in the lower 90s. West Winds 5 to 10 Mph.

Tonight 26 Aug St. Clair

Mostly clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.

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Cahokia Temperature Statistics

August Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 24 August, 2026

    55.9 °F

  • Average August

    78.8 °F

  • Highest 11 August, 2026

    96.7 °F

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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