Illiopolis Weather Forecast

    • 40
    • 63

    Partly Sunny

    • 55
    • 69

    Chance Rain Showers

    • 47
    • 70

    Chance Rain Showers

    • 53
    • 66

    Rain Showers Likely

    • 46
    • 69

    Rain Showers

    • 35
    • 57

    Slight Chance Rain Showers

    • 35
    • 53

    Mostly Sunny

Today 28 Mar Sangamon

Sunny and not as cool. Near steady temperature in the lower 60s. Southwest Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 28 Mar Sangamon

Mostly clear this Evening, then becoming partly cloudy. Not as cool with Lows in the lower 40s. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Illiopolis Temperature Statistics

March Temperature

Decatur Airport (19.3 miles)

  • Lowest 1 March, 2024

    24.9 °F
  • Average March

    48 °F
  • Highest 4 March, 2024

    75.7 °F

Climate (2019–Present)

Decatur Airport (19.3 miles)

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  • Average Low 2019–2024

    44.8 °F
  • Average 2019–2024

    54.4 °F
  • Average High 2019–2024

    63.9 °F
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