S
M
T
W
T
F
S
30
80°
62°
31
81°
62°
1
80°
61°
2
76°
60°
3
77°
61°
4
79°
61°
5
80°
60°
6
80°
61°
7
81°
61°
8
81°
60°
9
79°
60°
10
74°
59°
11
79°
61°
12
78°
60°
13
79°
59°
14
69°
47°
15
68°
49°
16
69°
53°
17
72°
54°
18
67°
47°
19
70°
53°
20
75°
55°
21
75°
55°
22
74°
52°
23
75°
45°
24
68°
46°
25
71°
52°
26
73°
54°
27
68°
49°
28
71°
43°
29
63°
45°
30
67°
48°
1
65°
52°
2
66°
53°
3
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sullivan Township
Sullivan Township's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 43° and 62°. The average high for September is 74° with an average low of 55°. 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 Sullivan Township. See also: October | November | December.
