University of Illinois Springfield Weather Forecast

    • 38
    • 43

    Increasing Clouds

    • 18
    • 52

    Rain

    • 27
    • 34

    Partly Sunny

    • 26
    • 49

    Partly Sunny

    • 26
    • 37

    Mostly Cloudy

    • 33
    • 42

    Mostly Cloudy

Today 17 Dec Sangamon

Partly sunny. Highs in the lower 40s. Northwest Winds around 5 Mph, becoming east this afternoon.

Tonight 17 Dec Sangamon

Mostly cloudy. A chance of rain after midnight. Breezy with Lows in the upper 30s. Temperature rising into the upper 40s after midnight. South Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 40 percent.

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University of Illinois Springfield Temperature Statistics

December Temperature

Springfield - Abraham Lincoln Capital Airport (8.7 miles)

  • Lowest 14 December, 2025

    -6 °F

  • Average December

    23 °F

  • Highest 10 December, 2025

    42.1 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (8.7 miles)

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  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    65 °F
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