S
M
T
W
T
F
S
30
73°
51°
31
72°
50°
1
71°
51°
2
72°
55°
3
71°
56°
4
72°
51°
5
73°
49°
6
72°
50°
7
71°
48°
8
72°
49°
9
71°
54°
10
70°
50°
11
70°
47°
12
71°
48°
13
70°
48°
14
72°
52°
15
73°
53°
16
75°
53°
17
75°
52°
18
73°
46°
19
73°
51°
20
72°
45°
21
67°
47°
22
67°
50°
23
72°
50°
24
71°
51°
25
72°
49°
26
71°
42°
27
67°
44°
28
63°
43°
29
62°
43°
30
62°
41°
1
62°
45°
2
Hist. Avg.
62°
42°
3
Hist. Avg.
62°
42°
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 62° to 75°, with overnight lows between 41° and 56°. The average high for September is 70° 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 Jefferson Township. See also: October | November | December.