S
M
T
W
T
F
S
29
61°
49°
30
61°
50°
1
64°
59°
2
68°
61°
3
69°
60°
4
64°
60°
5
63°
58°
6
64°
55°
7
63°
54°
8
62°
51°
9
61°
49°
10
62°
50°
11
74°
62°
12
74°
50°
13
76°
46°
14
71°
48°
15
60°
46°
16
61°
47°
17
59°
55°
18
63°
57°
19
71°
60°
20
72°
58°
21
73°
57°
22
74°
58°
23
72°
60°
24
75°
47°
25
74°
43°
26
72°
45°
27
58°
52°
28
62°
57°
29
70°
58°
30
71°
58°
31
72°
57°
1
73°
58°
2
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Jacksonville Beach
Jacksonville Beach's December 2026 forecast shows daily high temperatures ranging from 58° to 76°, with overnight lows between 43° and 62°. The average high for December is 68° with an average low of 54°. 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 Jacksonville Beach. See also: January | February | March.
