S
M
T
W
T
F
S
26
105°
77°
27
104°
73°
28
104°
76°
29
105°
79°
30
104°
77°
31
105°
82°
1
94°
66°
2
97°
61°
3
102°
69°
4
103°
73°
5
102°
75°
6
102°
76°
7
102°
78°
8
106°
74°
9
105°
74°
10
102°
73°
11
103°
77°
12
104°
78°
13
106°
82°
14
104°
80°
15
102°
78°
16
100°
73°
17
96°
71°
18
108°
72°
19
102°
76°
20
106°
73°
21
107°
75°
22
105°
78°
23
104°
72°
24
109°
74°
25
99°
73°
26
97°
76°
27
93°
68°
28
98°
68°
29
102°
71°
30
101°
76°
31
101°
74°
1
98°
72°
2
102°
75°
3
103°
76°
4
101°
73°
5
100°
73°
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.