S
M
T
W
T
F
S
29
52°
39°
30
56°
41°
1
55°
37°
2
55°
31°
3
59°
28°
4
48°
29°
5
49°
30°
6
54°
31°
7
57°
36°
8
58°
41°
9
45°
29°
10
61°
42°
11
62°
39°
12
Hist. Avg.
52°
36°
13
Hist. Avg.
52°
36°
14
Hist. Avg.
51°
35°
15
Hist. Avg.
51°
35°
16
Hist. Avg.
51°
35°
17
Hist. Avg.
51°
35°
18
Hist. Avg.
50°
35°
19
Hist. Avg.
50°
35°
20
Hist. Avg.
50°
34°
21
Hist. Avg.
50°
34°
22
Hist. Avg.
50°
34°
23
Hist. Avg.
50°
34°
24
Hist. Avg.
49°
34°
25
Hist. Avg.
49°
34°
26
Hist. Avg.
49°
34°
27
Hist. Avg.
49°
33°
28
Hist. Avg.
49°
33°
29
Hist. Avg.
49°
33°
30
Hist. Avg.
49°
33°
31
Hist. Avg.
49°
33°
1
Hist. Avg.
48°
33°
2
Hist. Avg.
48°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Jacksonville
Jacksonville's December 2026 forecast shows daily high temperatures ranging from 45° to 62°, with overnight lows between 28° and 42°. The average high for December is 55° with an average low of 35°. 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. See also: January | February | March.
