Weather in Great Falls: May
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Average day temperature: | 61.5°F |
| Average night temperature: | 45.4°F | |
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Number of sunny days: | 12 days |
| Day length: | 14.5 - 15.7 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.4 in. | |
| more information | ||
14 days
forecast
forecast
| Great Falls |
weather in
June
June
| Great Falls |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 88°F. At the same time the lowest night temperature was 30°F. Daily and nightly averages during May were 67.3°F and 43.9°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Great Falls in May is 1.4 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 8.0 mph It makes May one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 8.6.
Best time for vacation in Great Falls
Great Falls on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Great Falls
Local time: 00:39
December 05, friday
0300
36°F
NE
6 mph
6 mph
0600
30°F
NE
3 mph
3 mph
0900
23°F
N
3 mph
3 mph
1200
30°F
NE
3 mph
3 mph
1500
36°F
E
2 mph
2 mph
1800
32°F
W
2 mph
2 mph
2100
32°F
S
1 mph
1 mph
December 06, saturday
0000
34°F
SW
3 mph
3 mph
