S
M
T
W
T
F
S
30
88°
74°
31
86°
75°
1
87°
78°
2
88°
79°
3
88°
77°
4
84°
77°
5
90°
75°
6
90°
75°
7
86°
73°
8
86°
79°
9
88°
79°
10
88°
75°
11
88°
73°
12
90°
72°
13
91°
75°
14
90°
77°
15
90°
77°
16
86°
79°
17
86°
79°
18
86°
75°
19
88°
73°
20
82°
75°
21
86°
73°
22
86°
73°
23
84°
75°
24
75°
65°
25
79°
61°
26
80°
60°
27
82°
63°
28
84°
68°
29
85°
70°
30
85°
73°
1
83°
72°
2
84°
71°
3
85°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fernandina Beach
Fernandina Beach's September 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 60° and 73°. The average high for September is 82° with an average low of 67°. 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 Fernandina Beach. See also: October | November | December.
