S
M
T
W
T
F
S
26
88°
56°
27
89°
56°
28
88°
54°
29
80°
52°
30
79°
52°
31
81°
54°
1
85°
55°
2
88°
56°
3
85°
45°
4
80°
46°
5
83°
52°
6
89°
53°
7
86°
50°
8
81°
46°
9
80°
50°
10
84°
52°
11
88°
52°
12
89°
55°
13
89°
54°
14
88°
53°
15
88°
53°
16
87°
52°
17
88°
48°
18
87°
50°
19
82°
46°
20
78°
46°
21
77°
43°
22
77°
42°
23
75°
45°
24
77°
47°
25
81°
48°
26
85°
50°
27
84°
51°
28
85°
50°
29
84°
49°
30
83°
50°
31
84°
51°
1
84°
49°
2
83°
48°
3
82°
47°
4
81°
45°
5
78°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sherman
Sherman's August 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 41° and 56°. The average high for August is 84° with an average low of 50°. 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 Sherman. See also: September | October | November.