S
M
T
W
T
F
S
28
90°
70°
29
91°
70°
30
93°
72°
1
95°
72°
2
97°
73°
3
99°
75°
4
99°
75°
5
95°
75°
6
93°
73°
7
91°
73°
8
97°
73°
9
98°
74°
10
95°
73°
11
93°
70°
12
92°
70°
13
83°
65°
14
90°
68°
15
96°
70°
16
96°
71°
17
95°
70°
18
94°
71°
19
92°
72°
20
91°
69°
21
92°
71°
22
92°
70°
23
91°
72°
24
91°
72°
25
88°
71°
26
88°
70°
27
91°
72°
28
91°
72°
29
86°
71°
30
87°
72°
31
91°
72°
1
91°
71°
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 83° to 98°, with overnight lows between 65° and 74°. The average high for July is 92° with an average low of 71°. 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.