Cahokia Weather Forecast

    • 63
    • 81

    Chance Thunderstorms

    • 55
    • 84

    Thunderstorms Likely

    • 53
    • 74

    Rain Showers Likely

    • 46
    • 68

    Mostly Sunny

    • 48
    • 70

    Partly Sunny

    • 45
    • 68

    Partly Sunny

    • 48
    • 69

    Partly Sunny

Today 26 Apr St. Clair

Mostly sunny. Near steady temperature in the upper 70s. Southeast Winds around 10 Mph.

Tonight 26 Apr St. Clair

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 60s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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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

    58.4 °F

  • Average High 2021–2026

    69.2 °F
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