McHenry Rainfall Forecast

Today 18 May
70%
Tue 19 May
65%
Wed 20 May
5%
Thu 21 May
No Rain
Fri 22 May
20%
Sat 23 May
25%
Sun 24 May
15%

McHenry Rainfall Statistics

May Rainfall

Chicago/Waukegan Regional Airport (21.1 miles)

Total Rainfall 2026
13.7in
Daily Average 2026
0.1in
Wettest Day 2 April, 2026
1.9in
Wet Days 2026
42/138 (30%)
Total Rainfall April
8.4in
Daily Average April
0.3in
Wettest Day 2 April, 2026
1.9in
Wet Days April
17/30 (57%)
Total Rainfall May
0.1in
Daily Average May
0in
Wettest Day 7 May, 2026
0.04in
Wet Days May
2/18 (11%)

Climate (2010–Present)

Chicago/Waukegan Regional Airport (21.1 miles)

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Annual Average 2021–2025
31.8in
Monthly Average 2021–2026
2.8in
Daily Average 2021–2026
0.1in
Wettest Day 23 July, 2022
3.9in

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