S
M
T
W
T
F
S
26
99°
66°
27
83°
66°
28
91°
64°
29
87°
60°
30
88°
63°
31
86°
56°
1
89°
56°
2
98°
60°
3
92°
51°
4
71°
47°
5
79°
48°
6
90°
55°
7
89°
61°
8
97°
56°
9
91°
64°
10
91°
59°
11
93°
64°
12
86°
61°
13
74°
58°
14
82°
58°
15
73°
59°
16
80°
57°
17
84°
55°
18
81°
56°
19
82°
55°
20
88°
56°
21
91°
59°
22
81°
58°
23
89°
61°
24
85°
62°
25
81°
59°
26
81°
54°
27
83°
56°
28
89°
57°
29
82°
58°
30
76°
60°
31
82°
56°
1
81°
58°
2
84°
55°
3
84°
54°
4
88°
54°
5
87°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cheyenne
Cheyenne's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Cheyenne. See also: September | October | November.
