S
M
T
W
T
F
S
30
79°
66°
31
82°
69°
1
84°
70°
2
85°
71°
3
84°
70°
4
80°
69°
5
79°
64°
6
79°
57°
7
79°
56°
8
77°
55°
9
77°
69°
10
75°
54°
11
78°
49°
12
81°
57°
13
70°
50°
14
71°
46°
15
73°
61°
16
70°
62°
17
70°
54°
18
75°
57°
19
65°
57°
20
68°
53°
21
64°
55°
22
69°
56°
23
70°
57°
24
69°
54°
25
71°
55°
26
73°
57°
27
70°
58°
28
68°
56°
29
69°
48°
30
69°
56°
1
72°
54°
2
65°
53°
3
61°
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 61° to 75°, with overnight lows between 48° and 62°. The average high for September is 69° 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.
