S
M
T
W
T
F
S
30
78°
58°
31
82°
63°
1
83°
63°
2
84°
62°
3
83°
59°
4
82°
63°
5
80°
61°
6
77°
62°
7
76°
61°
8
75°
61°
9
78°
56°
10
76°
55°
11
75°
62°
12
81°
60°
13
80°
60°
14
74°
61°
15
80°
60°
16
72°
55°
17
78°
52°
18
72°
56°
19
Hist. Avg.
74°
54°
20
Hist. Avg.
74°
53°
21
Hist. Avg.
73°
53°
22
Hist. Avg.
73°
52°
23
Hist. Avg.
72°
52°
24
Hist. Avg.
72°
52°
25
Hist. Avg.
72°
51°
26
Hist. Avg.
71°
51°
27
Hist. Avg.
71°
50°
28
Hist. Avg.
70°
50°
29
Hist. Avg.
70°
50°
30
Hist. Avg.
70°
49°
1
Hist. Avg.
69°
49°
2
Hist. Avg.
69°
48°
3
Hist. Avg.
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mount Union
Mount Union's September 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 52° and 63°. The average high for September is 78° with an average low of 60°. 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 Mount Union. See also: October | November | December.
