Joliet Rainfall Forecast

Today 15 May
40%
Sat 16 May
65%
Sun 17 May
45%
Mon 18 May
70%
Tue 19 May
70%
Wed 20 May
60%
Thu 21 May
10%

Joliet Rainfall Statistics

May Rainfall

Joliet Regional Airport (5 miles)

Total Rainfall 2026
19.4in
Daily Average 2026
0.1in
Wettest Day 8 January, 2026
3.4in
Wet Days 2026
35/135 (26%)
Total Rainfall April
7.5in
Daily Average April
0.3in
Wettest Day 2 April, 2026
2.4in
Wet Days April
15/30 (50%)
Total Rainfall May
0.5in
Daily Average May
0.04in
Wettest Day 4 May, 2026
0.4in
Wet Days May
3/15 (20%)

Climate (2010–Present)

Joliet Regional Airport (5 miles)

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Annual Average 2021–2025
37.4in
Monthly Average 2021–2026
3.4in
Daily Average 2021–2026
0.1in
Wettest Day 6 September, 2023
4.4in

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