S
M
T
W
T
F
S
30
94°
71°
31
93°
66°
1
87°
65°
2
87°
67°
3
88°
70°
4
92°
68°
5
92°
70°
6
91°
69°
7
87°
68°
8
87°
64°
9
88°
63°
10
86°
63°
11
86°
62°
12
85°
61°
13
84°
62°
14
84°
61°
15
85°
62°
16
84°
61°
17
85°
63°
18
86°
66°
19
88°
62°
20
Hist. Avg.
84°
62°
21
Hist. Avg.
84°
61°
22
Hist. Avg.
83°
61°
23
Hist. Avg.
83°
60°
24
Hist. Avg.
83°
60°
25
Hist. Avg.
82°
60°
26
Hist. Avg.
82°
59°
27
Hist. Avg.
82°
59°
28
Hist. Avg.
81°
58°
29
Hist. Avg.
81°
58°
30
Hist. Avg.
80°
58°
1
Hist. Avg.
80°
57°
2
Hist. Avg.
80°
57°
3
Hist. Avg.
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marks
Marks's September 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 61° and 71°. The average high for September is 88° with an average low of 65°. 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 Marks. See also: October | November | December.