S
M
T
W
T
F
S
28
73°
54°
29
72°
49°
30
83°
47°
1
85°
49°
2
90°
46°
3
87°
48°
4
90°
49°
5
96°
51°
6
94°
57°
7
95°
57°
8
91°
50°
9
84°
52°
10
94°
46°
11
101°
59°
12
103°
50°
13
101°
57°
14
99°
56°
15
96°
55°
16
96°
58°
17
96°
60°
18
99°
59°
19
99°
67°
20
99°
60°
21
91°
67°
22
92°
67°
23
82°
62°
24
98°
65°
25
101°
68°
26
99°
66°
27
97°
67°
28
93°
62°
29
94°
63°
30
92°
62°
31
89°
60°
1
90°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Casper
Casper's July 2026 forecast shows daily high temperatures ranging from 82° to 101°, with overnight lows between 59° and 68°. The average high for July is 94° with an average low of 63°. 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. See also: August | September | October.