Cahokia Weather Forecast

    • 76
    • 95

    Chance Thunderstorms

    • 74
    • 91

    Thunderstorms Likely

    • 73
    • 92

    Slight Chance Thunderstorms

    • 73
    • 93

    Chance Rain Showers

    • 71
    • 92

    Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

Today 5 Jul St. Clair

Sunny. Near steady temperature in the lower 90s. South Winds 5 to 10 Mph.

Tonight 5 Jul St. Clair

Partly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cahokia Temperature Statistics

July Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 2 July, 2025

    64 °F

  • Average July

    79.4 °F

  • Highest 3 July, 2025

    91.9 °F

Climate (2020–Present)

St. Louis Downtown Airport (1.9 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    68.3 °F
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