S
M
T
W
T
F
S
29
76°
58°
30
76°
56°
1
77°
56°
2
73°
59°
3
76°
48°
4
77°
48°
5
69°
55°
6
67°
56°
7
71°
50°
8
74°
47°
9
73°
47°
10
64°
46°
11
64°
44°
12
65°
44°
13
63°
46°
14
64°
50°
15
64°
54°
16
68°
55°
17
72°
53°
18
72°
47°
19
73°
46°
20
65°
43°
21
64°
42°
22
62°
44°
23
63°
51°
24
67°
45°
25
71°
43°
26
64°
45°
27
62°
53°
28
69°
52°
29
71°
51°
30
63°
50°
31
69°
42°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Flagler Beach
Flagler Beach's December 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 42° and 59°. The average high for December is 69° 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 Flagler Beach. See also: January | February | March.