S
M
T
W
T
F
S
30
74°
59°
31
75°
57°
1
74°
52°
2
67°
50°
3
67°
52°
4
68°
49°
5
67°
49°
6
71°
57°
7
75°
57°
8
72°
56°
9
70°
56°
10
74°
55°
11
74°
55°
12
73°
56°
13
74°
57°
14
76°
45°
15
65°
46°
16
64°
45°
17
66°
47°
18
67°
44°
19
63°
45°
20
63°
46°
21
71°
49°
22
72°
51°
23
72°
42°
24
68°
40°
25
64°
41°
26
66°
46°
27
69°
50°
28
69°
49°
29
68°
40°
30
60°
39°
1
60°
41°
2
62°
43°
3
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Union Mills
Union Mills's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 39° and 59°. The average high for September is 69° 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 Union Mills. See also: October | November | December.
