Great Falls Rainfall Forecast

Today 26 Aug
20%
Thu 27 Aug
25%
Fri 28 Aug
25%
Sat 29 Aug
50%
Sun 30 Aug
55%
Mon 31 Aug
10%
Tue 1 Sep
10%

Great Falls Rainfall Statistics

August Rainfall

Great Falls, Great Falls International Airport (3.7 miles)

Total Rainfall 2026
13.7in
Daily Average 2026
0.1in
Wettest Day 28 June, 2026
1.6in
Wet Days 2026
60/238 (25%)
Total Rainfall July
0.3in
Daily Average July
0.01in
Wettest Day 14 July, 2026
0.2in
Wet Days July
4/31 (13%)
Total Rainfall August
1.2in
Daily Average August
0.1in
Wettest Day 14 August, 2026
0.7in
Wet Days August
3/26 (12%)

Climate (2021–2025)

Great Falls, Great Falls International Airport (3.7 miles)

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Annual Average 2021–2025
13.9in
Monthly Average 2021–2026
1.2in
Daily Average 2021–2026
0.04in
Wettest Day 28 June, 2026
1.6in

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