Jack Mountain Rainfall Forecast

Today 16 Apr
95%
Fri 17 Apr
85%
Sat 18 Apr
20%
Sun 19 Apr
No Rain
Mon 20 Apr
10%
Tue 21 Apr
30%
Wed 22 Apr
65%

Jack Mountain Rainfall Statistics

April Rainfall

Helena Regional Airport (23 miles)

Total Rainfall 2026
2.9in
Daily Average 2026
0.03in
Wettest Day 9 February, 2026
0.6in
Wet Days 2026
20/106 (19%)
Total Rainfall March
1.1in
Daily Average March
0.03in
Wettest Day 14 March, 2026
0.4in
Wet Days March
7/31 (23%)
Total Rainfall April
0.9in
Daily Average April
0.1in
Wettest Day 11 April, 2026
0.5in
Wet Days April
4/16 (25%)

Climate (2010–Present)

Helena Regional Airport (23 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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