Koch Airport Rainfall Forecast

Today 26 Sep
No Rain
Sun 27 Sep
10%
Mon 28 Sep
No Rain
Tue 29 Sep
20%
Wed 30 Sep
65%
Thu 1 Oct
65%
Fri 2 Oct
35%

Koch Airport Rainfall Statistics

September Rainfall

Janesville-Rock County (13.7 miles)

Total Rainfall 2026
15.6in
Daily Average 2026
0.1in
Wettest Day 19 September, 2026
3.3in
Wet Days 2026
43/269 (16%)
Total Rainfall August
3.7in
Daily Average August
0.1in
Wettest Day 1 August, 2026
2.8in
Wet Days August
5/31 (16%)
Total Rainfall September
5.1in
Daily Average September
0.2in
Wettest Day 19 September, 2026
3.3in
Wet Days September
7/26 (27%)

Climate (2021–2025)

Janesville-Rock County (13.7 miles)

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Annual Average 2021–2025
13.4in
Monthly Average 2021–2026
1.2in
Daily Average 2021–2026
0.04in
Wettest Day 19 September, 2026
3.3in

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