Lake Superior Rainfall Forecast

Today 21 Aug
75%
Sat 22 Aug
10%
Sun 23 Aug
No Rain
Mon 24 Aug
No Rain
Tue 25 Aug
35%
Wed 26 Aug
55%
Thu 27 Aug
15%

Lake Superior Rainfall Statistics

August Rainfall

Grand Marais, The Bay of Grand Marais (28 miles)

Total Rainfall 2026
16.5in
Daily Average 2026
0.1in
Wettest Day 18 February, 2026
2.3in
Wet Days 2026
94/233 (40%)
Total Rainfall July
2.1in
Daily Average July
0.1in
Wettest Day 27 July, 2026
0.7in
Wet Days July
9/31 (29%)
Total Rainfall August
0.9in
Daily Average August
0.04in
Wettest Day 9 August, 2026
0.3in
Wet Days August
5/21 (24%)

Climate (2021–2025)

Grand Marais, The Bay of Grand Marais (28 miles)

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Annual Average 2021–2025
26.1in
Monthly Average 2021–2026
2.3in
Daily Average 2021–2026
0.1in
Wettest Day 11 November, 2021
3.4in

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