Cahokia Weather Forecast

    • 57
    • 79

    Mostly Sunny

    • 62
    • 79

    Mostly Sunny

    • 63
    • 84

    Chance Thunderstorms

    • 72
    • 90

    Rain Showers

    • 62
    • 83

    Rain Showers Likely

    • 64
    • 84

    Partly Sunny

    • 69
    • 89

    Slight Chance Thunderstorms

Today 14 Jun St. Clair

Mostly sunny. Near steady temperature in the mid 70s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 14 Jun St. Clair

Mostly clear. Cooler with Lows in the mid 50s. Northwest Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight.

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  • Temperature Real-Time

Cahokia Temperature Statistics

June Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    77.6 °F

  • Highest 10 June, 2026

    93.7 °F

Climate (2021–Present)

St. Louis Downtown Airport (1.9 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    69.3 °F
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