S
M
T
W
T
F
S
30
73°
54°
31
74°
52°
1
73°
53°
2
73°
52°
3
74°
53°
4
76°
52°
5
75°
51°
6
74°
52°
7
72°
50°
8
73°
49°
9
71°
53°
10
71°
49°
11
72°
48°
12
71°
48°
13
74°
55°
14
73°
48°
15
76°
50°
16
76°
55°
17
75°
56°
18
78°
55°
19
77°
46°
20
73°
46°
21
67°
52°
22
67°
50°
23
70°
52°
24
73°
53°
25
72°
44°
26
71°
42°
27
67°
44°
28
63°
43°
29
63°
43°
30
62°
43°
1
61°
42°
2
61°
39°
3
Hist. Avg.
66°
47°
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 61° to 78°, with overnight lows between 39° and 56°. The average high for September is 71° 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 Washington Township. See also: October | November | December.
