S
M
T
W
T
F
S
29
42°
26°
30
38°
24°
1
37°
24°
2
35°
26°
3
36°
26°
4
36°
23°
5
35°
23°
6
34°
22°
7
33°
21°
8
31°
20°
9
30°
16°
10
31°
18°
11
29°
26°
12
38°
26°
13
40°
31°
14
43°
32°
15
Hist. Avg.
38°
26°
16
Hist. Avg.
38°
25°
17
Hist. Avg.
38°
25°
18
Hist. Avg.
38°
25°
19
Hist. Avg.
38°
25°
20
Hist. Avg.
37°
24°
21
Hist. Avg.
37°
24°
22
Hist. Avg.
37°
24°
23
Hist. Avg.
37°
24°
24
Hist. Avg.
36°
23°
25
Hist. Avg.
36°
23°
26
Hist. Avg.
36°
23°
27
Hist. Avg.
36°
23°
28
Hist. Avg.
36°
22°
29
Hist. Avg.
35°
22°
30
Hist. Avg.
35°
22°
31
Hist. Avg.
35°
22°
1
Hist. Avg.
35°
22°
2
Hist. Avg.
35°
21°
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 29° to 43°, with overnight lows between 16° and 32°. The average high for December is 36° with an average low of 24°. 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.
