Cahokia Weather Forecast

    • 78
    • 97

    Slight Chance Thunderstorms

    • 77
    • 96

    Slight Chance Thunderstorms

    • 75
    • 96

    Chance Thunderstorms

    • 74
    • 94

    Chance Rain Showers

    • 72
    • 92

    Chance Thunderstorms

    • 73
    • 91

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

Today 2 Jul St. Clair

Mostly sunny with a slight chance of Showers and Thunderstorms. Hot. Near steady temperature in the mid 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 2 Jul St. Clair

Partly cloudy with a slight chance of Showers and Thunderstorms this Evening, then mostly clear after midnight. Lows in the mid 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 104 early this evening.

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Cahokia Temperature Statistics

July Temperature

St. Louis Downtown Airport (1.9 miles)

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  • Average July

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Climate (2021–2026)

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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