Cahokia Weather Forecast

    • 67
    • 89

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 71
    • 96

    Rain Showers Likely

    • 65
    • 85

    Rain Showers

    • 56
    • 80

    Rain Showers Likely

    • 44
    • 69

    Partly Sunny

Today 11 Oct St. Clair

Sunny. Highs in the upper 80s. Southwest Winds around 5 Mph.

Tonight 11 Oct St. Clair

Mostly clear in the Evening, then becoming partly cloudy. Not as cool with Lows in the mid 60s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cahokia Temperature Statistics

October Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 6 October, 2026

    42.7 °F

  • Average October

    67.8 °F

  • Highest 1 October, 2026

    92.6 °F

Climate (2021–2026)

St. Louis Downtown Airport (1.9 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    69.5 °F
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