S
M
T
W
T
F
S
30
72°
57°
31
72°
58°
1
72°
58°
2
75°
61°
3
74°
61°
4
78°
62°
5
80°
61°
6
79°
60°
7
76°
59°
8
72°
58°
9
72°
58°
10
73°
59°
11
74°
58°
12
75°
57°
13
77°
58°
14
77°
57°
15
76°
57°
16
76°
56°
17
75°
56°
18
74°
55°
19
73°
56°
20
74°
56°
21
78°
52°
22
76°
50°
23
76°
41°
24
70°
40°
25
71°
49°
26
73°
46°
27
69°
52°
28
74°
54°
29
77°
53°
30
74°
45°
1
74°
39°
2
64°
48°
3
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marshall
Marshall's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 39° and 62°. The average high for September is 74° with an average low of 54°. 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 Marshall. See also: October | November | December.