Mascoutah Weather Forecast

    • 37
    • 73

    Mostly Sunny

    • 31
    • 66

    Partly Sunny

    • 33
    • 47

    Rain/Snow

    • 36
    • 44

    Rain

    • 43
    • 54

    Rain Likely

    • 52
    • 63

    Rain Likely

Today 27 Feb St. Clair

Sunny. Not as cool with Highs 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

Mascoutah Temperature Statistics

February Temperature

Belleville, Scott AFB/MidAmerica Airport (5 miles)

  • Lowest 1 February, 2026

    4.5 °F

  • Average February

    38.6 °F

  • Highest 18 February, 2026

    74.8 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (5 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    67.8 °F
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