S
M
T
W
T
F
S
26
86°
64°
27
85°
64°
28
84°
63°
29
84°
63°
30
83°
59°
31
78°
58°
1
77°
60°
2
75°
62°
3
79°
62°
4
83°
61°
5
81°
62°
6
82°
61°
7
76°
58°
8
76°
61°
9
75°
59°
10
76°
61°
11
80°
62°
12
81°
61°
13
82°
60°
14
83°
61°
15
82°
60°
16
84°
54°
17
81°
52°
18
74°
50°
19
72°
50°
20
73°
51°
21
74°
51°
22
74°
52°
23
75°
52°
24
74°
56°
25
76°
59°
26
80°
51°
27
72°
51°
28
71°
50°
29
75°
57°
30
78°
58°
31
77°
49°
1
72°
47°
2
70°
49°
3
71°
53°
4
73°
56°
5
78°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sheridan
Sheridan's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 47° and 64°. The average high for August is 78° with an average low of 57°. 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 Sheridan. See also: September | October | November.