S
M
T
W
T
F
S
30
92°
69°
31
91°
70°
1
90°
68°
2
88°
65°
3
88°
69°
4
89°
66°
5
89°
68°
6
90°
67°
7
89°
68°
8
88°
67°
9
89°
67°
10
88°
66°
11
88°
67°
12
86°
66°
13
83°
64°
14
82°
65°
15
82°
65°
16
83°
64°
17
84°
61°
18
83°
59°
19
82°
62°
20
81°
59°
21
80°
58°
22
80°
57°
23
82°
58°
24
83°
62°
25
84°
63°
26
83°
62°
27
84°
61°
28
78°
59°
29
82°
55°
30
80°
55°
1
Hist. Avg.
79°
56°
2
Hist. Avg.
78°
56°
3
Hist. Avg.
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mount Carmel
Mount Carmel's September 2026 forecast shows daily high temperatures ranging from 78° to 92°, with overnight lows between 55° and 70°. The average high for September is 85° with an average low of 64°. 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 Carmel. See also: October | November | December.