Cannon Lake Rainfall Forecast

Today 2 Aug
No Rain
Mon 3 Aug
5%
Tue 4 Aug
No Rain
Wed 5 Aug
No Rain
Thu 6 Aug
No Rain
Fri 7 Aug
No Rain
Sat 8 Aug
No Rain

Cannon Lake Rainfall Statistics

August Rainfall

Helena Regional Airport (31.1 miles)

Total Rainfall 2026
8.5in
Daily Average 2026
0.04in
Wettest Day 30 May, 2026
1in
Wet Days 2026
51/214 (24%)
Total Rainfall July
0.9in
Daily Average July
0.03in
Wettest Day 1 July, 2026
0.4in
Wet Days July
5/31 (16%)
Total Rainfall August
–
Daily Average August
–
Wettest Day 2 August, 2026
–
Wet Days August
–

Climate (2021–2025)

Helena Regional Airport (31.1 miles)

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Annual Average 2021–2025
11.3in
Monthly Average 2021–2026
1in
Daily Average 2021–2026
0.03in
Wettest Day 22 September, 2023
1.3in

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