Cahokia Weather Forecast

    • 58
    • 82

    Becoming Sunny

    • 58
    • 80

    Mostly Sunny

    • 64
    • 83

    Rain Showers

    • 57
    • 79

    Rain Showers Likely

    • 54
    • 77

    Slight Chance Rain Showers

    • 60
    • 78

    Rain Showers Likely

    • 54
    • 79

    Rain Showers Likely

Today 21 Apr St. Clair

Sunny. Not as cool with Highs around 80. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 21 Apr St. Clair

Mostly clear. Lows in the upper 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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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

    63.6 °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

    47.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    69.2 °F
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