Average data for 10 years
1 May
Wednesday
+14°
+8°
2 May
Thursday
+13°
+7°
3 May
Friday
+16°
+11°
4 May
Saturday
+17°
+11°
5 May
Sunday
+15°
+9°
6 May
Monday
+13°
+7°
7 May
Tuesday
+14°
+9°
8 May
Wednesday
+16°
+10°
9 May
Thursday
+14°
+9°
10 May
Friday
+15°
+9°
11 May
Saturday
+17°
+10°
12 May
Sunday
+16°
+9°
13 May
Monday
+15°
+10°
14 May
Tuesday
+17°
+11°
15 May
Wednesday
+17°
+13°
16 May
Thursday
+18°
+13°
17 May
Friday
+18°
+13°
18 May
Saturday
+18°
+12°
19 May
Sunday
+15°
+11°
20 May
Monday
+19°
+13°
21 May
Tuesday
+16°
+12°
22 May
Wednesday
+17°
+12°
23 May
Thursday
+14°
+10°
24 May
Friday
+15°
+11°
25 May
Saturday
+16°
+11°
26 May
Sunday
+15°
+10°
27 May
Monday
+14°
+10°
28 May
Tuesday
+16°
+12°
29 May
Wednesday
+18°
+13°
30 May
Thursday
+18°
+13°
31 May
Friday
+18°
+13°
Cities with similar weather in May
Finland
Helsinki
Estonia
Tallinn
Kazakhstan
Petropavlovsk
Sweden
Stockholm
Lithuania
Palanga
In May, the weather in Great Falls is typically warm. Average daily high temperature in May is about 16 degrees above zero. On average, Great Falls has 11 rainy, 11 partly cloudy, 8 sunny, and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Great Falls.