S
M
T
W
T
F
S
30
90°
70°
31
92°
68°
1
91°
68°
2
90°
67°
3
90°
64°
4
91°
67°
5
90°
68°
6
86°
68°
7
85°
66°
8
86°
64°
9
88°
63°
10
89°
62°
11
87°
62°
12
89°
61°
13
85°
62°
14
84°
61°
15
85°
62°
16
86°
61°
17
85°
65°
18
89°
64°
19
87°
65°
20
88°
62°
21
84°
59°
22
83°
58°
23
Hist. Avg.
84°
60°
24
Hist. Avg.
84°
60°
25
Hist. Avg.
84°
60°
26
Hist. Avg.
83°
59°
27
Hist. Avg.
83°
59°
28
Hist. Avg.
83°
58°
29
Hist. Avg.
82°
58°
30
Hist. Avg.
82°
57°
1
Hist. Avg.
82°
57°
2
Hist. Avg.
82°
56°
3
Hist. Avg.
81°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marshall
Marshall's September 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 58° and 70°. The average high for September is 88° with an average low of 64°. 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.