S
M
T
W
T
F
S
30
71°
55°
31
70°
52°
1
69°
63°
2
72°
57°
3
73°
55°
4
71°
54°
5
71°
53°
6
71°
48°
7
76°
47°
8
73°
60°
9
68°
58°
10
65°
44°
11
69°
37°
12
74°
50°
13
68°
45°
14
61°
42°
15
63°
44°
16
69°
45°
17
68°
42°
18
57°
36°
19
63°
44°
20
59°
38°
21
53°
38°
22
61°
37°
23
65°
43°
24
67°
44°
25
70°
47°
26
72°
51°
27
70°
47°
28
61°
47°
29
62°
48°
30
60°
47°
1
61°
40°
2
57°
41°
3
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marten River
Marten River's September 2026 forecast shows daily high temperatures ranging from 53° to 72°, with overnight lows between 36° and 51°. The average high for September is 62° with an average low of 43°. 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 Marten River. See also: October | November | December.