Helena Rainfall Forecast

Today 29 Aug
60%
Sun 30 Aug
30%
Mon 31 Aug
40%
Tue 1 Sep
25%
Wed 2 Sep
45%
Thu 3 Sep
25%
Fri 4 Sep
35%

Helena Rainfall Statistics

August Rainfall

Lone Rock Tri-County Regional Airport (8.7 miles)

Total Rainfall 2026
26.9in
Daily Average 2026
0.1in
Wettest Day 2 July, 2026
2.9in
Wet Days 2026
80/241 (33%)
Total Rainfall July
5.3in
Daily Average July
0.2in
Wettest Day 2 July, 2026
2.9in
Wet Days July
8/31 (26%)
Total Rainfall August
3in
Daily Average August
0.1in
Wettest Day 21 August, 2026
0.7in
Wet Days August
10/29 (34%)

Climate (2021–2025)

Lone Rock Tri-County Regional Airport (8.7 miles)

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Annual Average 2021–2025
29.2in
Monthly Average 2021–2026
2.6in
Daily Average 2021–2026
0.1in
Wettest Day 10 August, 2025
2.9in

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