Winthrop Harbor Rainfall Forecast

Today 19 Sep
100%
Sun 20 Sep
95%
Mon 21 Sep
25%
Tue 22 Sep
20%
Wed 23 Sep
15%
Thu 24 Sep
5%
Fri 25 Sep
10%

Winthrop Harbor Rainfall Statistics

September Rainfall

Chicago/Waukegan Regional Airport (3.7 miles)

Total Rainfall 2026
32in
Daily Average 2026
0.1in
Wettest Day 11 June, 2026
2in
Wet Days 2026
83/262 (32%)
Total Rainfall August
6.1in
Daily Average August
0.2in
Wettest Day 1 August, 2026
1.5in
Wet Days August
15/31 (48%)
Total Rainfall September
1.1in
Daily Average September
0.1in
Wettest Day 15 September, 2026
0.5in
Wet Days September
6/19 (32%)

Climate (2021–2025)

Chicago/Waukegan Regional Airport (3.7 miles)

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Annual Average 2021–2025
31.8in
Monthly Average 2021–2026
3in
Daily Average 2021–2026
0.1in
Wettest Day 23 July, 2022
3.9in

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