S
M
T
W
T
F
S
26
82°
51°
27
90°
50°
28
92°
49°
29
91°
46°
30
87°
49°
31
88°
47°
1
84°
44°
2
85°
45°
3
84°
43°
4
82°
44°
5
83°
45°
6
83°
49°
7
85°
48°
8
90°
48°
9
87°
46°
10
90°
50°
11
91°
40°
12
83°
39°
13
78°
38°
14
77°
38°
15
78°
40°
16
79°
45°
17
83°
47°
18
87°
49°
19
89°
49°
20
88°
50°
21
88°
45°
22
86°
44°
23
87°
40°
24
80°
46°
25
78°
45°
26
80°
39°
27
77°
40°
28
76°
35°
29
74°
36°
30
73°
35°
31
75°
38°
1
77°
38°
2
76°
39°
3
75°
43°
4
83°
45°
5
84°
44°
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 73° to 92°, with overnight lows between 35° and 51°. The average high for August is 83° with an average low of 44°. 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.