S
M
T
W
T
F
S
31
77°
45°
1
78°
50°
2
76°
49°
3
83°
49°
4
88°
51°
5
89°
56°
6
85°
61°
7
89°
67°
8
76°
63°
9
82°
63°
10
89°
69°
11
95°
71°
12
93°
68°
13
87°
67°
14
91°
65°
15
78°
54°
16
79°
64°
17
89°
71°
18
93°
72°
19
77°
61°
20
82°
60°
21
81°
64°
22
82°
65°
23
83°
66°
24
80°
63°
25
82°
65°
26
85°
65°
27
84°
67°
28
87°
66°
29
80°
63°
30
79°
63°
1
80°
64°
2
81°
64°
3
81°
70°
4
85°
69°
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 77° to 93°, with overnight lows between 54° and 72°. The average high for June is 82° 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.
