Boulder Rainfall Forecast

Today 17 Jul
70%
Sat 18 Jul
75%
Sun 19 Jul
40%
Mon 20 Jul
15%
Tue 21 Jul
40%
Wed 22 Jul
50%
Thu 23 Jul
55%

Boulder Rainfall Statistics

July Rainfall

Helena Regional Airport (26.1 miles)

Total Rainfall 2026
8.1in
Daily Average 2026
0.04in
Wettest Day 30 May, 2026
1in
Wet Days 2026
48/198 (24%)
Total Rainfall June
2.3in
Daily Average June
0.1in
Wettest Day 29 June, 2026
0.8in
Wet Days June
12/30 (40%)
Total Rainfall July
0.5in
Daily Average July
0.04in
Wettest Day 1 July, 2026
0.4in
Wet Days July
2/17 (12%)

Climate (2021–2025)

Helena Regional Airport (26.1 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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