Helena Valley Regulating Reservoir Rainfall Forecast

Today 6 Jun
35%
Sun 7 Jun
80%
Mon 8 Jun
10%
Tue 9 Jun
55%
Wed 10 Jun
70%
Thu 11 Jun
60%
Fri 12 Jun
45%

Helena Valley Regulating Reservoir Rainfall Statistics

June Rainfall

Helena Regional Airport (5.6 miles)

Total Rainfall 2026
5.4in
Daily Average 2026
0.04in
Wettest Day 30 May, 2026
1in
Wet Days 2026
35/157 (22%)
Total Rainfall May
1.8in
Daily Average May
0.1in
Wettest Day 30 May, 2026
1in
Wet Days May
10/31 (32%)
Total Rainfall June
0.2in
Daily Average June
0.1in
Wettest Day 1 June, 2026
0.2in
Wet Days June
1/6 (17%)

Climate (2010–Present)

Helena Regional Airport (5.6 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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