Illiopolis Rainfall Forecast

Today 12 Jun
100%
Sat 13 Jun
20%
Sun 14 Jun
85%
Mon 15 Jun
No Rain
Tue 16 Jun
25%
Wed 17 Jun
50%
Thu 18 Jun
70%

Illiopolis Rainfall Statistics

June Rainfall

Decatur Airport (19.3 miles)

Total Rainfall 2026
17.6in
Daily Average 2026
0.1in
Wettest Day 27 April, 2026
2.5in
Wet Days 2026
41/163 (25%)
Total Rainfall May
2.4in
Daily Average May
0.1in
Wettest Day 18 May, 2026
0.5in
Wet Days May
11/31 (35%)
Total Rainfall June
1in
Daily Average June
0.1in
Wettest Day 8 June, 2026
0.9in
Wet Days June
2/12 (17%)

Climate (2010–Present)

Decatur Airport (19.3 miles)

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Annual Average 2021–2025
37.3in
Monthly Average 2021–2026
3.1in
Daily Average 2021–2026
0.1in
Wettest Day 3 August, 2022
3.8in

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