S
M
T
W
T
F
S
29
59°
39°
30
58°
38°
1
59°
29°
2
44°
25°
3
47°
30°
4
54°
36°
5
51°
36°
6
43°
30°
7
42°
24°
8
41°
22°
9
41°
24°
10
42°
28°
11
47°
28°
12
52°
30°
13
49°
27°
14
44°
25°
15
45°
27°
16
44°
29°
17
43°
26°
18
42°
21°
19
41°
20°
20
39°
17°
21
37°
21°
22
41°
27°
23
44°
23°
24
41°
20°
25
39°
19°
26
39°
22°
27
41°
20°
28
41°
20°
29
40°
24°
30
40°
20°
31
41°
19°
1
39°
15°
2
37°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gainesville
Gainesville's December 2026 forecast shows daily high temperatures ranging from 37° to 59°, with overnight lows between 15° and 39°. The average high for December is 44° with an average low of 25°. 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 Gainesville. See also: January | February | March.