Collinsville Weather Forecast

    • 5
    • 13

    Mostly Cloudy

    • 10
    • 13

    Snow

    • 0
    • 16

    Snow Likely

    • 6
    • 17

    Mostly Sunny

    • 15
    • 32

    Mostly Cloudy

    • 6
    • 26

    Partly Sunny

Today 23 Jan Madison

Partly sunny. Much cooler with Highs around 12. North Winds 15 to 20 Mph. Wind chill Values as low as 12 below.

Tonight 23 Jan Madison

Mostly cloudy. A slight chance of snow after midnight. Cold. Near steady temperature around 5 above. Northeast Winds 10 to 15 Mph. Chance of snow 20 percent. Wind chill Values as low as 12 below.

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Collinsville Temperature Statistics

January Temperature

Belleville, Scott AFB/MidAmerica Airport (10.6 miles)

  • Lowest 19 January, 2026

    7 °F

  • Average January

    37 °F

  • Highest 6 January, 2026

    69.1 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (10.6 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    57.5 °F

  • Average High 2021–2026

    67.7 °F
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