S
M
T
W
T
F
S
27
42°
17°
28
29°
19°
29
29°
24°
30
39°
24°
31
40°
26°
1
40°
27°
2
42°
25°
3
44°
22°
4
40°
13°
5
35°
10°
6
26°
15°
7
26°
21°
8
37°
16°
9
38°
10°
10
28°
12°
11
30°
6°
12
27°
6°
13
22°
5°
14
26°
4°
15
22°
7°
16
23°
9°
17
26°
6°
18
24°
7°
19
26°
2°
20
27°
4°
21
21°
19°
22
31°
20°
23
38°
12°
24
39°
8°
25
26°
11°
26
30°
16°
27
35°
13°
28
32°
18°
29
Hist. Avg.
32°
13°
30
Hist. Avg.
32°
13°
31
Hist. Avg.
33°
13°
1
Hist. Avg.
33°
13°
2
Hist. Avg.
33°
13°
3
Hist. Avg.
33°
13°
4
Hist. Avg.
33°
14°
5
Hist. Avg.
33°
14°
6
Hist. Avg.
34°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Williamstown
Williamstown's January 2027 forecast shows daily high temperatures ranging from 21° to 44°, with overnight lows between 2° and 27°. The average high for January is 32° with an average low of 14°. 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 Williamstown. See also: February | March | April.
