Caseyville Weather Forecast

    • 38
    • 74

    Mostly Sunny

    • 31
    • 66

    Slight Chance Rain

    • 33
    • 47

    Cloudy

    • 39
    • 44

    Rain Likely

    • 49
    • 59

    Rain Likely

    • 52
    • 64

    Rain Likely

    • 54
    • 68

    Chance Rain

Today 27 Feb St. Clair

Sunny and not as cool. Near steady temperature in the lower 70s. Southwest Winds 15 to 20 Mph.

Tonight 27 Feb St. Clair

Clear. Lows in the upper 30s. West Winds 5 to 10 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Caseyville Temperature Statistics

February Temperature

St. Louis Downtown Airport (8.1 miles)

  • Lowest 1 February, 2026

    -1.4 °F

  • Average February

    38.7 °F

  • Highest 18 February, 2026

    73.7 °F

Climate (2021–Present)

St. Louis Downtown Airport (8.1 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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