S
M
T
W
T
F
S
27
27°
2°
28
24°
-2°
29
15°
-3°
30
12°
-5°
31
10°
-5°
1
11°
7°
2
13°
12°
3
25°
7°
4
27°
-5°
5
20°
-7°
6
14°
-9°
7
7°
-10°
8
10°
3°
9
14°
5°
10
18°
-8°
11
21°
-9°
12
6°
-8°
13
11°
-7°
14
8°
-1°
15
12°
-2°
16
16°
-8°
17
14°
-7°
18
15°
-6°
19
12°
3°
20
22°
8°
21
23°
8°
22
23°
5°
23
25°
7°
24
22°
11°
25
21°
8°
26
24°
5°
27
22°
5°
28
17°
4°
29
17°
7°
30
25°
8°
31
Hist. Avg.
24°
3°
1
Hist. Avg.
24°
3°
2
Hist. Avg.
24°
3°
3
Hist. Avg.
25°
4°
4
Hist. Avg.
25°
4°
5
Hist. Avg.
25°
4°
6
Hist. Avg.
25°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Wilton
Wilton's January 2027 forecast shows daily high temperatures ranging from 6° to 27°, with overnight lows between -10° and 12°. The average high for January is 17° with an average low of 0°. 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.