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.
Illiopolis Temperature Statistics
March Temperature
Decatur Airport (19.3 miles)
Lowest 1 March, 2024
24.9 °FAverage March
48 °FHighest 4 March, 2024
75.7 °F
Climate (2019–Present)
Decatur Airport (19.3 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2019–2024
44.8 °FAverage 2019–2024
54.4 °FAverage High 2019–2024
63.9 °F