S
M
T
W
T
F
S
30
77°
56°
31
78°
62°
1
77°
63°
2
80°
63°
3
78°
55°
4
77°
53°
5
76°
54°
6
76°
54°
7
77°
57°
8
81°
57°
9
82°
60°
10
82°
53°
11
75°
53°
12
75°
58°
13
76°
51°
14
74°
51°
15
73°
52°
16
72°
51°
17
73°
54°
18
75°
49°
19
75°
49°
20
73°
50°
21
76°
50°
22
72°
56°
23
76°
56°
24
78°
55°
25
78°
56°
26
77°
56°
27
77°
55°
28
79°
54°
29
77°
52°
30
75°
54°
1
76°
55°
2
78°
47°
3
76°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jefferson Township
Jefferson Township's September 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 43° and 63°. The average high for September is 76° with an average low of 54°. 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 Jefferson Township. See also: October | November | December.