University of Illinois Springfield Weather Forecast

    • 74
    • 93

    Mostly Sunny

    • 69
    • 93

    Chance Thunderstorms

    • 60
    • 83

    Rain Showers Likely

    • 66
    • 85

    Mostly Sunny

    • 67
    • 90

    Chance Rain Showers

    • 66
    • 86

    Chance Rain Showers

    • 67
    • 89

    Chance Rain Showers

Today 8 Sep Sangamon

Mostly sunny. Highs in the lower 90s. South Winds around 5 Mph.

Tonight 8 Sep Sangamon

Mostly clear. Not as cool with Lows in the lower 70s. South Winds 5 to 10 Mph.

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University of Illinois Springfield Temperature Statistics

September Temperature

Springfield - Abraham Lincoln Capital Airport (8.7 miles)

  • Lowest 6 September, 2026

    66.9 °F

  • Average September

    85.6 °F

  • Highest 2 September, 2026

    100.7 °F

Climate (2021–2026)

Springfield - Abraham Lincoln Capital Airport (8.7 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    65.7 °F
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