S
M
T
W
T
F
S
29
51°
22°
30
46°
13°
1
41°
15°
2
34°
26°
3
46°
27°
4
44°
20°
5
46°
21°
6
40°
25°
7
44°
25°
8
43°
23°
9
41°
20°
10
38°
21°
11
41°
16°
12
38°
13°
13
33°
10°
14
31°
11°
15
30°
21°
16
37°
22°
17
Hist. Avg.
34°
15°
18
Hist. Avg.
34°
14°
19
Hist. Avg.
34°
14°
20
Hist. Avg.
34°
14°
21
Hist. Avg.
33°
14°
22
Hist. Avg.
33°
14°
23
Hist. Avg.
33°
14°
24
Hist. Avg.
33°
13°
25
Hist. Avg.
33°
13°
26
Hist. Avg.
33°
13°
27
Hist. Avg.
32°
13°
28
Hist. Avg.
32°
13°
29
Hist. Avg.
32°
13°
30
Hist. Avg.
32°
13°
31
Hist. Avg.
32°
12°
1
Hist. Avg.
32°
12°
2
Hist. Avg.
32°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Williamson
Williamson's December 2026 forecast shows daily high temperatures ranging from 30° to 51°, with overnight lows between 10° and 27°. The average high for December is 40° with an average low of 20°. 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 Williamson. See also: January | February | March.
