S
M
T
W
T
F
S
30
60°
40°
31
59°
39°
1
52°
39°
2
51°
38°
3
51°
38°
4
52°
39°
5
52°
40°
6
53°
38°
7
52°
37°
8
51°
42°
9
50°
43°
10
51°
43°
11
56°
42°
12
56°
44°
13
55°
42°
14
56°
41°
15
54°
40°
16
54°
42°
17
53°
41°
18
55°
41°
19
55°
40°
20
54°
39°
21
53°
39°
22
50°
38°
23
51°
29°
24
50°
31°
25
47°
30°
26
43°
29°
27
42°
29°
28
42°
30°
29
43°
28°
30
42°
28°
1
41°
31°
2
40°
35°
3
45°
33°
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 40° to 60°, with overnight lows between 28° and 44°. The average high for September is 51° with an average low of 37°. 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.
