S
M
T
W
T
F
S
30
95°
67°
31
83°
63°
1
81°
56°
2
87°
59°
3
93°
68°
4
86°
66°
5
88°
67°
6
78°
67°
7
85°
66°
8
87°
60°
9
79°
56°
10
84°
67°
11
84°
52°
12
71°
50°
13
69°
55°
14
74°
50°
15
69°
48°
16
67°
52°
17
71°
49°
18
72°
51°
19
73°
49°
20
69°
48°
21
70°
52°
22
69°
49°
23
61°
38°
24
77°
54°
25
77°
54°
26
76°
53°
27
76°
54°
28
76°
53°
29
73°
52°
30
74°
49°
1
65°
50°
2
73°
49°
3
71°
50°
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 61° to 84°, with overnight lows between 38° and 67°. The average high for September is 73° with an average low of 51°. 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.