S
M
T
W
T
F
S
28
75°
48°
29
70°
54°
30
78°
49°
1
82°
58°
2
83°
60°
3
81°
57°
4
81°
56°
5
88°
59°
6
86°
60°
7
88°
63°
8
86°
61°
9
87°
60°
10
82°
59°
11
88°
60°
12
87°
59°
13
86°
60°
14
82°
57°
15
83°
61°
16
77°
61°
17
86°
62°
18
86°
61°
19
85°
63°
20
87°
63°
21
88°
62°
22
87°
63°
23
82°
63°
24
86°
62°
25
81°
62°
26
81°
61°
27
84°
62°
28
82°
61°
29
79°
61°
30
77°
58°
31
76°
57°
1
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Custer State Park Headquarters
Custer State Park Headquarters's July 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 56° and 63°. The average high for July is 83° with an average low of 60°. 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 Custer State Park Headquarters. See also: August | September | October.