Illiopolis Weather Forecast

    • 41
    • 54

    Mostly Cloudy

    • 31
    • 63

    Mostly Cloudy

    • 32
    • 45

    Mostly Cloudy

    • 34
    • 43

    Rain Likely

    • 23
    • 42

    Partly Sunny

    • 30
    • 40

    Mostly Cloudy

Today 2 Feb Sangamon

Partly sunny this Morning, then becoming mostly cloudy. Not as cool with Highs in the mid 50s. Southwest Winds 5 to 10 Mph.

Tonight 2 Feb Sangamon

Mostly cloudy. Lows in the lower 40s. South Winds 5 to 10 Mph.

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Illiopolis Temperature Statistics

February Temperature

Decatur Airport (19.3 miles)

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  • Average February

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Climate (2020–Present)

Decatur Airport (19.3 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    54.8 °F

  • Average High 2020–2025

    64.5 °F
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