Helena Rainfall Forecast

Today 17 Oct
20%
Sat 18 Oct
50%
Sun 19 Oct
80%
Mon 20 Oct
45%
Tue 21 Oct
No Rain
Wed 22 Oct
10%
Thu 23 Oct
5%

Helena Rainfall Statistics

October Rainfall

Helena Regional Airport (1.9 miles)

Total Rainfall 2025
12.5in
Daily Average 2025
0.04in
Wettest Day 14 May, 2025
1in
Wet Days 2025
88/290 (30%)
Total Rainfall September
0.6in
Daily Average September
0.02in
Wettest Day 14 September, 2025
0.4in
Wet Days September
4/30 (13%)
Total Rainfall October
1.3in
Daily Average October
0.1in
Wettest Day 12 October, 2025
0.5in
Wet Days October
9/17 (53%)

Climate (2010–Present)

Helena Regional Airport (1.9 miles)

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Annual Average 2020–2024
10.5in
Monthly Average 2020–2025
0.9in
Daily Average 2020–2025
0.03in
Wettest Day 22 September, 2023
1.3in

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