S
M
T
W
T
F
S
27
31°
12°
28
27°
12°
29
31°
11°
30
29°
14°
31
30°
24°
1
42°
19°
2
41°
13°
3
37°
11°
4
25°
13°
5
29°
20°
6
37°
24°
7
40°
21°
8
44°
7°
9
44°
8°
10
24°
17°
11
32°
12°
12
33°
11°
13
27°
9°
14
27°
4°
15
24°
8°
16
22°
13°
17
29°
17°
18
30°
19°
19
42°
8°
20
40°
8°
21
23°
15°
22
27°
19°
23
36°
20°
24
39°
22°
25
38°
21°
26
39°
22°
27
41°
22°
28
40°
19°
29
43°
20°
30
38°
18°
31
28°
12°
1
38°
6°
2
38°
4°
3
Hist. Avg.
35°
13°
4
Hist. Avg.
35°
13°
5
Hist. Avg.
36°
13°
6
Hist. Avg.
36°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Wilton
Wilton's January 2027 forecast shows daily high temperatures ranging from 22° to 44°, with overnight lows between 4° and 24°. The average high for January is 34° with an average low of 15°. 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 Wilton. See also: February | March | April.