Grass Lake Rainfall Forecast

Today 8 Sep
70%
Wed 9 Sep
75%
Thu 10 Sep
No Rain
Fri 11 Sep
No Rain
Sat 12 Sep
35%
Sun 13 Sep
40%
Mon 14 Sep
45%

Grass Lake Rainfall Statistics

September Rainfall

Madison, Dane County Regional-Truax Field (17.4 miles)

Total Rainfall 2026
28in
Daily Average 2026
0.1in
Wettest Day 24 June, 2026
1.9in
Wet Days 2026
86/251 (34%)
Total Rainfall August
4.6in
Daily Average August
0.1in
Wettest Day 21 August, 2026
1.4in
Wet Days August
9/31 (29%)
Total Rainfall September
0.4in
Daily Average September
0.1in
Wettest Day 3 September, 2026
0.2in
Wet Days September
3/8 (38%)

Climate (2021–2025)

Madison, Dane County Regional-Truax Field (17.4 miles)

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Annual Average 2021–2025
33.9in
Monthly Average 2021–2026
3in
Daily Average 2021–2026
0.1in
Wettest Day 22 September, 2024
4in

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