Cahokia Weather Forecast

    • 41
    • 57

    Sunny

    • 42
    • 69

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 58
    • 80

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

    • 64
    • 85

    Rain Showers Likely

    • 51
    • 77

    Rain Showers Likely

Today 18 Apr St. Clair

Sunny and much cooler. Near steady temperature in the mid 50s. Northwest Winds 15 to 20 Mph.

Tonight 18 Apr St. Clair

Clear. Lows around 40. Northwest Winds 10 to 15 Mph, becoming west around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cahokia Temperature Statistics

April Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 6 April, 2026

    37.7 °F

  • Average April

    64.2 °F

  • Highest 14 April, 2026

    90.6 °F

Climate (2021–Present)

St. Louis Downtown Airport (1.9 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    69.1 °F
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