Cahokia Weather Forecast

    • 19
    • 30

    Mostly Sunny

    • 36
    • 56

    Mostly Cloudy

    • 37
    • 55

    Chance Rain

    • 33
    • 51

    Chance Rain

    • 41
    • 65

    Sunny

    • 34
    • 68

    Partly Sunny

    • 32
    • 50

    Chance Rain

Today 23 Feb St. Clair

Sunny. Highs in the lower 30s. Northwest Winds 10 to 15 Mph.

Tonight 23 Feb St. Clair

Mostly clear. Lows around 20. West Winds around 5 Mph, becoming south after midnight.

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Cahokia Temperature Statistics

February Temperature

St. Louis Downtown Airport (1.9 miles)

  • Lowest 1 February, 2026

    -1.4 °F

  • Average February

    39.8 °F

  • Highest 18 February, 2026

    73 °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

    58.2 °F

  • Average High 2021–2026

    68.9 °F
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