S
M
T
W
T
F
S
30
81°
58°
31
84°
59°
1
84°
62°
2
85°
61°
3
85°
61°
4
84°
60°
5
81°
59°
6
79°
54°
7
82°
58°
8
84°
60°
9
84°
60°
10
83°
59°
11
84°
59°
12
84°
60°
13
83°
60°
14
83°
59°
15
81°
59°
16
81°
58°
17
80°
58°
18
76°
54°
19
74°
51°
20
72°
56°
21
72°
52°
22
73°
47°
23
71°
47°
24
71°
53°
25
75°
55°
26
71°
51°
27
70°
54°
28
76°
53°
29
69°
53°
30
68°
52°
1
69°
44°
2
67°
42°
3
66°
42°
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 66° to 85°, with overnight lows between 42° and 62°. The average high for September is 77° 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 Washington Township. See also: October | November | December.
