Lake Sutherlin Rainfall Forecast

Today 20 Sep
30%
Mon 21 Sep
5%
Tue 22 Sep
No Rain
Wed 23 Sep
5%
Thu 24 Sep
5%
Fri 25 Sep
5%
Sat 26 Sep
30%

Lake Sutherlin Rainfall Statistics

September Rainfall

Helena Regional Airport (59 miles)

Total Rainfall 2026
10.6in
Daily Average 2026
0.04in
Wettest Day 30 May, 2026
1in
Wet Days 2026
67/263 (25%)
Total Rainfall August
1.3in
Daily Average August
0.04in
Wettest Day 28 August, 2026
0.3in
Wet Days August
9/31 (29%)
Total Rainfall September
0.8in
Daily Average September
0.05in
Wettest Day 7 September, 2026
0.3in
Wet Days September
7/20 (35%)

Climate (2021–2025)

Helena Regional Airport (59 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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