S
M
T
W
T
F
S
31
77°
45°
1
79°
52°
2
76°
52°
3
82°
50°
4
86°
50°
5
89°
55°
6
89°
60°
7
91°
66°
8
79°
66°
9
84°
64°
10
88°
69°
11
94°
71°
12
94°
69°
13
87°
64°
14
91°
66°
15
78°
63°
16
79°
57°
17
87°
58°
18
85°
70°
19
83°
61°
20
84°
62°
21
86°
70°
22
86°
64°
23
83°
64°
24
81°
61°
25
82°
60°
26
80°
62°
27
81°
63°
28
84°
65°
29
85°
67°
30
86°
68°
1
87°
66°
2
84°
65°
3
79°
68°
4
83°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Great Falls
Great Falls's June 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 60° and 70°. The average high for June is 83° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Great Falls. See also: July | August | September.
