Illiopolis Weather Forecast

    • 62
    • 63

    Mostly Cloudy

    • 54
    • 73

    Rain

    • 46
    • 61

    Slight Chance Rain

    • 44
    • 64

    Mostly Cloudy

    • 40
    • 59

    Mostly Cloudy

    • 39
    • 60

    Partly Sunny

Today 2 Nov Sangamon

Cloudy. Near steady temperature in the mid 60s. South Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 2 Nov Sangamon

Mostly cloudy. Near steady temperature in the lower 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Graph Plots Open in Graphs
  • Temperature Forecast NOAA

  • Temperature Real-Time

Illiopolis Temperature Statistics

November Temperature

Decatur Airport (19.3 miles)

  • Lowest

    –
  • Average November

    –
  • Highest

    –

Climate (2021–2026)

Decatur Airport (19.3 miles)

Take a look at our website widgetsAvailable free! Find Out More
  • Average Low 2021–2026

    45.3 °F
  • Average 2021–2026

    55.6 °F
  • Average High 2021–2026

    65.8 °F
Get WillyWeather+ to remove ads