S
M
T
W
T
F
S
28
48°
9°
29
18°
9°
30
39°
10°
31
46°
30°
1
28°
16°
2
25°
23°
3
36°
19°
4
41°
21°
5
48°
32°
6
49°
31°
7
63°
28°
8
57°
37°
9
43°
32°
10
39°
23°
11
34°
19°
12
54°
27°
13
50°
39°
14
37°
14°
15
30°
7°
16
37°
10°
17
12°
5°
18
28°
5°
19
14°
1°
20
29°
9°
21
43°
16°
22
30°
5°
23
3°
-11°
24
3°
-6°
25
12°
0°
26
16°
-6°
27
21°
9°
28
27°
10°
29
21°
7°
30
12°
0°
31
27°
-2°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Williamson
Williamson's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Williamson. See also: February | March | April.
