S
M
T
W
T
F
S
30
77°
60°
31
81°
61°
1
81°
61°
2
78°
55°
3
71°
53°
4
72°
53°
5
74°
54°
6
75°
49°
7
72°
57°
8
76°
58°
9
79°
59°
10
79°
49°
11
77°
49°
12
72°
57°
13
79°
58°
14
80°
57°
15
78°
57°
16
79°
58°
17
79°
57°
18
78°
58°
19
79°
55°
20
78°
46°
21
73°
45°
22
67°
53°
23
70°
54°
24
73°
54°
25
75°
47°
26
76°
43°
27
65°
44°
28
63°
42°
29
64°
43°
30
63°
44°
1
64°
48°
2
66°
51°
3
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Washington Township
Washington Township's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 42° and 61°. The average high for September is 74° with an average low of 53°. 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 Washington Township. See also: October | November | December.
