S
M
T
W
T
F
S
30
82°
60°
31
81°
58°
1
82°
57°
2
80°
57°
3
79°
56°
4
80°
56°
5
80°
60°
6
79°
62°
7
84°
56°
8
80°
58°
9
81°
61°
10
82°
62°
11
82°
62°
12
85°
60°
13
84°
56°
14
78°
61°
15
83°
61°
16
83°
60°
17
84°
59°
18
83°
52°
19
78°
58°
20
80°
51°
21
83°
50°
22
74°
48°
23
75°
55°
24
81°
49°
25
80°
48°
26
Hist. Avg.
79°
52°
27
Hist. Avg.
79°
52°
28
Hist. Avg.
78°
51°
29
Hist. Avg.
78°
51°
30
Hist. Avg.
78°
50°
1
Hist. Avg.
77°
50°
2
Hist. Avg.
77°
50°
3
Hist. Avg.
77°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marine
Marine's September 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 48° and 62°. The average high for September is 81° with an average low of 57°. 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 Marine. See also: October | November | December.