S
M
T
W
T
F
S
30
71°
53°
31
73°
54°
1
76°
51°
2
70°
52°
3
69°
53°
4
73°
60°
5
72°
59°
6
76°
52°
7
71°
56°
8
69°
57°
9
68°
57°
10
74°
56°
11
71°
57°
12
69°
57°
13
67°
53°
14
67°
50°
15
65°
49°
16
65°
48°
17
66°
55°
18
68°
54°
19
72°
55°
20
74°
56°
21
68°
49°
22
70°
52°
23
64°
51°
24
69°
46°
25
67°
45°
26
63°
52°
27
64°
47°
28
Hist. Avg.
68°
45°
29
Hist. Avg.
68°
45°
30
Hist. Avg.
67°
45°
1
Hist. Avg.
67°
44°
2
Hist. Avg.
66°
44°
3
Hist. Avg.
66°
44°
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 63° to 76°, with overnight lows between 45° and 60°. The average high for September is 69° with an average low of 53°. 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.