Cahokia Weather Forecast

    • 72
    • 86

    Rain Showers Likely

    • 76
    • 92

    Chance Rain Showers

    • 76
    • 95

    Chance Rain Showers

    • 71
    • 94

    Rain Showers Likely

    • 71
    • 90

    Chance Rain Showers

    • 71
    • 90

    Chance Thunderstorms

Today 8 Jun St. Clair

Showers and Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Highs in the mid 80s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 8 Jun St. Clair

Mostly cloudy. Showers and Thunderstorms Likely, mainly in the evening. Some Thunderstorms may produce heavy rainfall. Humid with Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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Cahokia Temperature Statistics

June Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    74.1 °F

  • Highest 5 June, 2026

    87.7 °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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