Great Falls Rainfall Forecast

Today 15 May
80%
Fri 16 May
50%
Sat 17 May
50%
Sun 18 May
85%
Mon 19 May
70%
Tue 20 May
40%
Wed 21 May
35%

Great Falls Rainfall Statistics

May Rainfall

Great Falls, Great Falls International Airport (3.7 miles)

Total Rainfall 2025
5.1in
Daily Average 2025
0.04in
Wettest Day 4 May, 2025
0.8in
Wet Days 2025
44/135 (33%)
Total Rainfall April
0.5in
Daily Average April
0.02in
Wettest Day 1 April, 2025
0.3in
Wet Days April
6/30 (20%)
Total Rainfall May
1.4in
Daily Average May
0.1in
Wettest Day 4 May, 2025
0.8in
Wet Days May
5/15 (33%)

Climate (2010–Present)

Great Falls, Great Falls International Airport (3.7 miles)

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Annual Average 2020–2024
14.4in
Monthly Average 2020–2025
1.2in
Daily Average 2020–2025
0.04in
Wettest Day 29 June, 2020
2.1in

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