S
M
T
W
T
F
S
28
65°
45°
29
62°
40°
30
74°
43°
1
75°
48°
2
79°
51°
3
76°
51°
4
80°
49°
5
85°
51°
6
87°
54°
7
84°
58°
8
72°
53°
9
67°
53°
10
74°
58°
11
81°
59°
12
82°
58°
13
87°
57°
14
80°
53°
15
81°
52°
16
80°
57°
17
77°
55°
18
78°
54°
19
74°
49°
20
73°
52°
21
76°
51°
22
76°
56°
23
77°
55°
24
74°
56°
25
72°
56°
26
72°
55°
27
74°
56°
28
78°
56°
29
78°
55°
30
80°
56°
31
80°
57°
1
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Casper Mountain
Casper Mountain's July 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 49° and 59°. The average high for July is 77° with an average low of 55°. 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 Casper Mountain. See also: August | September | October.