Helena Regional Airport Rainfall Forecast

Today 10 May
5%
Mon 11 May
5%
Tue 12 May
No Rain
Wed 13 May
5%
Thu 14 May
45%
Fri 15 May
35%
Sat 16 May
20%

Helena Regional Airport Rainfall Statistics

May Rainfall

Helena Regional Airport (0 miles)

Total Rainfall 2026
3.5in
Daily Average 2026
0.03in
Wettest Day 9 February, 2026
0.6in
Wet Days 2026
25/130 (19%)
Total Rainfall April
1.4in
Daily Average April
0.05in
Wettest Day 11 April, 2026
0.5in
Wet Days April
8/30 (27%)
Total Rainfall May
0.1in
Daily Average May
0.01in
Wettest Day 7 May, 2026
0.1in
Wet Days May
1/10 (10%)

Climate (2010–Present)

Helena Regional Airport (0 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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