Cahokia Weather Forecast

    • 67
    • 80

    Rain Showers Likely

    • 50
    • 85

    Rain Showers

    • 40
    • 61

    Partly Sunny

    • 39
    • 63

    Sunny

    • 45
    • 71

    Partly Sunny

    • 49
    • 74

    Partly Sunny

Today 14 Oct St. Clair

Showers with a chance of Thunderstorms this Morning, then Showers likely with a slight chance of Thunderstorms this afternoon. Much cooler with Highs in the upper 70s. Northwest Winds around 5 Mph. Chance of rain near 100 percent.

Tonight 14 Oct St. Clair

Mostly cloudy with a chance of Showers. A slight chance of Thunderstorms in the Evening, then a chance of Thunderstorms after midnight. Lows in the mid 60s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Cahokia Temperature Statistics

October Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 6 October, 2026

    42.7 °F

  • Average October

    68.2 °F

  • Highest 12 October, 2026

    93 °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

    58.7 °F

  • Average High 2021–2026

    69.5 °F
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