Cahokia Weather Forecast

    • 62
    • 84

    Decreasing Clouds

    • 64
    • 86

    Mostly Sunny

    • 69
    • 87

    Partly Sunny

    • 70
    • 91

    Slight Chance Thunderstorms

    • 68
    • 89

    Mostly Sunny

    • 68
    • 87

    Partly Sunny

Today 23 Aug St. Clair

Sunny. Highs in the lower 80s. Northwest Winds 5 to 10 Mph.

Tonight 23 Aug St. Clair

Partly cloudy. Lows in the lower 60s. North Winds around 5 Mph, becoming northeast after midnight.

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Cahokia Temperature Statistics

August Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 3 August, 2026

    63.6 °F

  • Average August

    79.6 °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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