S
M
T
W
T
F
S
30
94°
75°
31
91°
75°
1
85°
76°
2
89°
76°
3
93°
76°
4
91°
75°
5
91°
76°
6
92°
74°
7
95°
76°
8
94°
73°
9
92°
73°
10
87°
72°
11
91°
74°
12
88°
72°
13
91°
74°
14
92°
73°
15
88°
72°
16
89°
69°
17
88°
70°
18
88°
69°
19
87°
68°
20
85°
68°
21
87°
67°
22
90°
71°
23
89°
71°
24
89°
70°
25
88°
71°
26
88°
70°
27
87°
70°
28
88°
69°
29
85°
70°
30
87°
69°
1
86°
63°
2
80°
62°
3
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cecilia
Cecilia's September 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 60° and 74°. The average high for September is 88° with an average low of 70°. 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 Cecilia. See also: October | November | December.