S
M
T
W
T
F
S
28
85°
68°
29
88°
70°
30
89°
69°
1
88°
68°
2
86°
67°
3
81°
70°
4
85°
69°
5
82°
69°
6
83°
70°
7
87°
71°
8
88°
71°
9
89°
72°
10
90°
72°
11
88°
71°
12
89°
72°
13
89°
70°
14
86°
69°
15
87°
71°
16
83°
71°
17
88°
70°
18
86°
71°
19
83°
71°
20
85°
70°
21
83°
71°
22
82°
71°
23
83°
70°
24
83°
69°
25
82°
69°
26
82°
68°
27
85°
66°
28
84°
65°
29
84°
67°
30
85°
69°
31
83°
66°
1
83°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Great Falls
Great Falls's July 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 65° and 72°. The average high for July is 85° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Great Falls. See also: August | September | October.