S
M
T
W
T
F
S
26
81°
61°
27
78°
61°
28
86°
62°
29
87°
62°
30
83°
60°
31
77°
54°
1
78°
61°
2
86°
62°
3
80°
60°
4
81°
55°
5
84°
58°
6
83°
60°
7
87°
61°
8
86°
60°
9
79°
58°
10
87°
53°
11
78°
50°
12
77°
51°
13
76°
51°
14
74°
53°
15
76°
50°
16
75°
48°
17
75°
51°
18
76°
55°
19
77°
59°
20
84°
60°
21
85°
60°
22
85°
58°
23
84°
50°
24
79°
52°
25
76°
49°
26
75°
53°
27
77°
54°
28
82°
48°
29
73°
48°
30
73°
55°
31
74°
53°
1
76°
55°
2
80°
50°
3
75°
45°
4
71°
46°
5
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Custer State Park
Custer State Park's August 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 45° and 62°. The average high for August is 79° 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 August weather will actually feel in Custer State Park. See also: September | October | November.
