S
M
T
W
T
F
S
30
78°
57°
31
77°
56°
1
77°
62°
2
78°
65°
3
79°
65°
4
85°
64°
5
85°
63°
6
83°
56°
7
79°
56°
8
78°
57°
9
77°
54°
10
75°
54°
11
76°
55°
12
75°
55°
13
78°
59°
14
80°
61°
15
79°
59°
16
75°
56°
17
74°
57°
18
75°
59°
19
76°
51°
20
75°
53°
21
74°
51°
22
78°
50°
23
72°
49°
24
71°
49°
25
71°
55°
26
72°
49°
27
72°
54°
28
71°
54°
29
69°
47°
30
69°
49°
1
70°
54°
2
74°
51°
3
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Union Township
Union Township's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 47° and 65°. The average high for September is 76° 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 Union Township. See also: October | November | December.
