S
M
T
W
T
F
S
29
71°
60°
30
73°
58°
1
74°
60°
2
74°
58°
3
75°
54°
4
73°
44°
5
66°
45°
6
63°
44°
7
59°
45°
8
60°
45°
9
64°
44°
10
69°
43°
11
60°
44°
12
60°
46°
13
61°
45°
14
62°
42°
15
60°
43°
16
59°
44°
17
60°
44°
18
61°
45°
19
61°
48°
20
64°
50°
21
68°
55°
22
70°
55°
23
71°
56°
24
69°
52°
25
68°
51°
26
70°
52°
27
68°
52°
28
67°
51°
29
69°
53°
30
70°
52°
31
71°
49°
1
70°
48°
2
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fernandina Beach
Fernandina Beach's December 2026 forecast shows daily high temperatures ranging from 59° to 75°, with overnight lows between 42° and 60°. The average high for December is 66° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Fernandina Beach. See also: January | February | March.
