Cahokia Weather Forecast

    • 72
    • 90

    Mostly Cloudy

    • 72
    • 90

    Chance Thunderstorms

    • 72
    • 87

    Rain Showers

    • 72
    • 87

    Rain Showers

    • 75
    • 92

    Chance Thunderstorms

    • 76
    • 95

    Mostly Sunny

Today 5 Jun St. Clair

Partly sunny with a slight chance of Showers. A slight chance of Thunderstorms. Highs in the upper 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 5 Jun St. Clair

Mostly cloudy. Lows around 70. Southwest Winds 10 to 15 Mph.

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  • Temperature Real-Time

Cahokia Temperature Statistics

June Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 3 June, 2026

    53.1 °F

  • Average June

    72.4 °F

  • Highest 1 June, 2026

    85.6 °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

    69.3 °F
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