Belleville Weather Forecast

    • 63
    • 81

    Rain

    • 38
    • 68

    Rain Likely

    • 46
    • 66

    Mostly Sunny

    • 59
    • 78

    Rain Likely

    • 53
    • 78

    Rain

    • 37
    • 61

    Chance Rain

    • 39
    • 57

    Partly Sunny

Today 6 Mar St. Clair

Mostly sunny with a slight chance of rain and Thunderstorms. Not as cool with Highs around 80. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 6 Mar St. Clair

Partly cloudy this Evening, then rain with a chance of Thunderstorms after midnight. Lows in the lower 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

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Belleville Temperature Statistics

March Temperature

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

  • Lowest 1 March, 2026

    30 °F

  • Average March

    43.6 °F

  • Highest 4 March, 2026

    55.9 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (7.5 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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