Cahokia Weather Forecast

    • 69
    • 86

    Increasing Clouds

    • 68
    • 86

    Thunderstorms

    • 63
    • 79

    Partly Sunny

    • 64
    • 82

    Partly Sunny

    • 65
    • 86

    Partly Sunny

    • 65
    • 84

    Partly Sunny

    • 68
    • 86

    Chance Thunderstorms

Today 20 Jun St. Clair

Sunny. Near steady temperature in the lower 80s. Northwest Winds around 5 Mph.

Tonight 20 Jun St. Clair

Mostly clear this Evening, then becoming partly cloudy. Lows in the upper 60s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cahokia Temperature Statistics

June Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    75.4 °F

  • Highest 10 June, 2026

    93.7 °F

Climate (2021–2026)

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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