S
M
T
W
T
F
S
30
73°
58°
31
76°
60°
1
79°
61°
2
79°
58°
3
78°
54°
4
78°
59°
5
77°
56°
6
76°
53°
7
71°
57°
8
69°
58°
9
71°
51°
10
74°
49°
11
70°
58°
12
72°
51°
13
76°
55°
14
73°
53°
15
68°
56°
16
68°
49°
17
68°
50°
18
Hist. Avg.
74°
54°
19
Hist. Avg.
74°
54°
20
Hist. Avg.
73°
53°
21
Hist. Avg.
73°
53°
22
Hist. Avg.
72°
52°
23
Hist. Avg.
72°
52°
24
Hist. Avg.
72°
52°
25
Hist. Avg.
71°
51°
26
Hist. Avg.
71°
51°
27
Hist. Avg.
70°
50°
28
Hist. Avg.
70°
50°
29
Hist. Avg.
70°
49°
30
Hist. Avg.
69°
49°
1
Hist. Avg.
69°
49°
2
Hist. Avg.
68°
48°
3
Hist. Avg.
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sherman
Sherman's September 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 49° and 61°. The average high for September is 73° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Sherman. See also: October | November | December.