S
M
T
W
T
F
S
29
70°
59°
30
74°
58°
1
75°
59°
2
75°
58°
3
74°
55°
4
75°
44°
5
69°
45°
6
64°
44°
7
61°
45°
8
62°
45°
9
65°
46°
10
68°
43°
11
61°
44°
12
62°
46°
13
63°
45°
14
63°
43°
15
62°
44°
16
61°
45°
17
62°
46°
18
63°
45°
19
64°
46°
20
65°
48°
21
67°
55°
22
71°
55°
23
72°
56°
24
70°
53°
25
69°
52°
26
71°
53°
27
69°
52°
28
68°
53°
29
71°
53°
30
71°
52°
31
72°
49°
1
71°
48°
2
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fleming Island
Fleming Island's December 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 43° and 59°. The average high for December is 68° with an average low of 50°. 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 Fleming Island. See also: January | February | March.
