S
M
T
W
T
F
S
31
86°
64°
1
85°
64°
2
86°
63°
3
87°
65°
4
82°
65°
5
86°
64°
6
88°
67°
7
90°
68°
8
90°
68°
9
91°
67°
10
90°
66°
11
89°
66°
12
87°
67°
13
89°
68°
14
90°
66°
15
86°
63°
16
83°
62°
17
83°
62°
18
84°
63°
19
86°
66°
20
87°
68°
21
91°
69°
22
92°
70°
23
92°
70°
24
91°
69°
25
91°
71°
26
88°
65°
27
91°
66°
28
88°
68°
29
91°
69°
30
92°
70°
1
89°
69°
2
92°
70°
3
88°
70°
4
93°
71°
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 82° to 93°, with overnight lows between 62° and 71°. The average high for June is 88° with an average low of 67°. 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.
