Helena Rainfall Forecast

Today 2 May
50%
Sat 3 May
25%
Sun 4 May
5%
Mon 5 May
No Rain
Tue 6 May
20%
Wed 7 May
50%
Thu 8 May
35%

Helena Rainfall Statistics

May Rainfall

St. Joseph, Rosecrans Memorial Airport (16.8 miles)

Total Rainfall 2025
5.4in
Daily Average 2025
0.05in
Wettest Day 2 April, 2025
1.2in
Wet Days 2025
23/122 (19%)
Total Rainfall April
2.4in
Daily Average April
0.1in
Wettest Day 2 April, 2025
1.2in
Wet Days April
10/30 (33%)
Total Rainfall May
–
Daily Average May
–
Wettest Day
–
Wet Days May
–

Climate (2010–Present)

St. Joseph, Rosecrans Memorial Airport (16.8 miles)

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Annual Average 2020–2024
33.6in
Monthly Average 2020–2025
2.8in
Daily Average 2020–2025
0.1in
Wettest Day 7 July, 2022
4.6in

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