S
M
T
W
T
F
S
30
71°
63°
31
80°
64°
1
91°
69°
2
94°
70°
3
82°
64°
4
80°
64°
5
79°
54°
6
76°
53°
7
80°
50°
8
81°
54°
9
77°
67°
10
78°
55°
11
77°
48°
12
85°
54°
13
78°
50°
14
70°
42°
15
74°
56°
16
70°
60°
17
67°
55°
18
72°
48°
19
62°
56°
20
68°
54°
21
61°
46°
22
64°
42°
23
68°
49°
24
71°
41°
25
66°
37°
26
71°
42°
27
73°
47°
28
73°
42°
29
75°
55°
30
72°
57°
1
73°
53°
2
70°
47°
3
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marathon Township
Marathon Township's September 2026 forecast shows daily high temperatures ranging from 70° to 75°, with overnight lows between 42° and 57°. The average high for September is 72° with an average low of 49°. 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 Marathon Township. See also: October | November | December.
