S
M
T
W
T
F
S
30
90°
72°
31
91°
74°
1
91°
75°
2
89°
79°
3
88°
79°
4
88°
78°
5
89°
78°
6
86°
77°
7
85°
71°
8
88°
72°
9
87°
71°
10
86°
70°
11
89°
71°
12
87°
72°
13
88°
71°
14
87°
70°
15
88°
69°
16
86°
71°
17
83°
72°
18
84°
72°
19
85°
72°
20
83°
71°
21
84°
71°
22
84°
70°
23
85°
71°
24
85°
71°
25
84°
70°
26
85°
70°
27
85°
69°
28
84°
69°
29
82°
68°
30
82°
68°
1
81°
69°
2
81°
68°
3
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cedar Key
Cedar Key's September 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 67° and 79°. The average high for September is 85° with an average low of 71°. 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 Cedar Key. See also: October | November | December.
