S
M
T
W
T
F
S
30
80°
60°
31
78°
61°
1
78°
66°
2
79°
68°
3
83°
67°
4
86°
69°
5
86°
66°
6
83°
60°
7
80°
61°
8
79°
60°
9
78°
58°
10
76°
58°
11
76°
59°
12
77°
59°
13
80°
64°
14
81°
64°
15
78°
58°
16
76°
60°
17
75°
59°
18
76°
62°
19
78°
55°
20
77°
58°
21
75°
56°
22
80°
54°
23
73°
53°
24
73°
53°
25
74°
58°
26
74°
54°
27
75°
58°
28
74°
58°
29
77°
50°
30
72°
53°
1
70°
58°
2
77°
56°
3
75°
50°
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 70° to 86°, with overnight lows between 50° and 69°. The average high for September is 77° with an average low of 59°. 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.
