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Today Hourly 7 days 30 days May
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May 2026 Weather | Great Falls, Montana

Today 5/2
Cloudy Weather
Day 66°
Night 41°
5
Sun 5/3
Cloudy Weather
Day 75°
Night 39°
1
Mon 5/4
Cloudy Weather
Day 54°
Night 34°
25
Tue 5/5
Cloudy Weather
Day 50°
Night 32°
10
Wed 5/6
Cloudy Weather
Day 72°
Night 46°
14
Thu 5/7
Cloudy Weather
Day 72°
Night 45°
25
Fri 5/8
Cloudy Weather
Day 70°
Night 48°
25
Sat 5/9
Cloudy Weather
Day 68°
Night 43°
0
Sun 5/10
Cloudy Weather
Day 66°
Night 43°
0
Mon 5/11
Cloudy Weather
Day 81°
Night 50°
2
Tue 5/12
Sunny Weather
Day 75°
Night 43°
0
Wed 5/13
Rainy Weather
Day 70°
Night 45°
55
Thu 5/14
Cloudy Weather
Day 66°
Night 41°
3
Fri 5/15
Sunny Weather
Day 75°
Night 43°
10
Sat 5/16
Cloudy Weather
Day 64°
Night 45°
25
Sun 5/17
Cloudy Weather
Day 63°
Night 37°
Mon 5/18
Rainy Weather
Day 66°
Night 45°
Tue 5/19
Rainy Weather
Day 61°
Night 43°
Wed 5/20
Rainy Weather
Day 57°
Night 43°
Thu 5/21
Cloudy Weather
Day 59°
Night 39°
Fri 5/22
Rainy Weather
Day 61°
Night 37°
Sat 5/23
Rainy Weather
Day 57°
Night 43°
Sun 5/24
Cloudy Weather
Day 61°
Night 37°
Mon 5/25
Sunny Weather
Day 61°
Night 36°
Tue 5/26
Cloudy Weather
Day 64°
Night 39°
Wed 5/27
Cloudy Weather
Day 70°
Night 43°
Thu 5/28
Cloudy Weather
Day 72°
Night 46°
Fri 5/29
Rainy Weather
Day 63°
Night 45°
Sat 5/30
Cloudy Weather
Day 61°
Night 45°
Sun 5/31
Cloudy Weather
Day 64°
Night 46°

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