S
M
T
W
T
F
S
30
77°
60°
31
76°
59°
1
76°
60°
2
77°
61°
3
75°
64°
4
75°
60°
5
78°
59°
6
77°
60°
7
75°
58°
8
76°
59°
9
74°
58°
10
74°
60°
11
75°
57°
12
73°
57°
13
74°
56°
14
75°
59°
15
75°
62°
16
77°
61°
17
73°
55°
18
71°
54°
19
71°
55°
20
73°
60°
21
71°
54°
22
70°
56°
23
75°
59°
24
74°
60°
25
75°
59°
26
74°
51°
27
73°
52°
28
67°
51°
29
66°
50°
30
67°
50°
1
67°
51°
2
65°
48°
3
Hist. Avg.
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clermont
Clermont's September 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 48° and 64°. The average high for September is 73° with an average low of 57°. 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 Clermont. See also: October | November | December.