S
M
T
W
T
F
S
26
100°
79°
27
99°
75°
28
100°
77°
29
99°
78°
30
100°
78°
31
103°
81°
1
96°
77°
2
94°
70°
3
99°
70°
4
100°
74°
5
101°
79°
6
100°
79°
7
102°
79°
8
102°
79°
9
100°
78°
10
99°
79°
11
100°
79°
12
99°
78°
13
98°
77°
14
101°
78°
15
101°
77°
16
99°
78°
17
100°
77°
18
93°
73°
19
95°
78°
20
96°
78°
21
96°
77°
22
95°
77°
23
96°
76°
24
96°
78°
25
95°
77°
26
96°
77°
27
95°
76°
28
94°
77°
29
95°
76°
30
96°
77°
31
95°
76°
1
94°
75°
2
93°
75°
3
93°
76°
4
92°
75°
5
93°
75°
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 92° to 102°, with overnight lows between 73° and 79°. The average high for August is 97° with an average low of 77°. 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.