Janesville Rainfall Forecast

Today 8 Sep
55%
Wed 9 Sep
80%
Thu 10 Sep
No Rain
Fri 11 Sep
5%
Sat 12 Sep
70%
Sun 13 Sep
40%
Mon 14 Sep
55%

Janesville Rainfall Statistics

September Rainfall

Waterloo, Waterloo Municipal Airport (6.8 miles)

Total Rainfall 2026
29.9in
Daily Average 2026
0.1in
Wettest Day 20 July, 2026
2in
Wet Days 2026
71/251 (28%)
Total Rainfall August
3.6in
Daily Average August
0.1in
Wettest Day 13 August, 2026
0.6in
Wet Days August
10/31 (32%)
Total Rainfall September
0.1in
Daily Average September
0.02in
Wettest Day 2 September, 2026
0.1in
Wet Days September
3/8 (38%)

Climate (2021–2025)

Waterloo, Waterloo Municipal Airport (6.8 miles)

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Annual Average 2021–2025
31.4in
Monthly Average 2021–2026
2.8in
Daily Average 2021–2026
0.1in
Wettest Day 21 May, 2024
2.8in

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