S
M
T
W
T
F
S
30
90°
74°
31
90°
73°
1
87°
73°
2
86°
74°
3
86°
73°
4
87°
73°
5
87°
75°
6
88°
74°
7
89°
72°
8
86°
73°
9
85°
72°
10
86°
73°
11
86°
72°
12
87°
76°
13
85°
75°
14
Hist. Avg.
86°
73°
15
Hist. Avg.
86°
73°
16
Hist. Avg.
86°
73°
17
Hist. Avg.
86°
73°
18
Hist. Avg.
85°
73°
19
Hist. Avg.
85°
72°
20
Hist. Avg.
85°
72°
21
Hist. Avg.
85°
72°
22
Hist. Avg.
85°
72°
23
Hist. Avg.
84°
72°
24
Hist. Avg.
84°
72°
25
Hist. Avg.
84°
71°
26
Hist. Avg.
84°
71°
27
Hist. Avg.
84°
71°
28
Hist. Avg.
83°
70°
29
Hist. Avg.
83°
70°
30
Hist. Avg.
83°
70°
1
Hist. Avg.
83°
70°
2
Hist. Avg.
82°
69°
3
Hist. Avg.
82°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fernandina Beach
Fernandina Beach's September 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 72° and 76°. The average high for September is 87° with an average low of 73°. 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.
