S
M
T
W
T
F
S
27
36°
20°
28
32°
21°
29
35°
21°
30
35°
27°
31
38°
29°
1
49°
22°
2
45°
18°
3
35°
20°
4
30°
22°
5
35°
30°
6
44°
32°
7
46°
27°
8
49°
14°
9
48°
19°
10
28°
26°
11
37°
22°
12
38°
19°
13
32°
19°
14
32°
12°
15
33°
19°
16
28°
23°
17
39°
27°
18
37°
25°
19
47°
17°
20
43°
18°
21
29°
25°
22
35°
28°
23
41°
29°
24
43°
31°
25
43°
31°
26
45°
29°
27
46°
29°
28
43°
26°
29
45°
27°
30
43°
28°
31
Hist. Avg.
38°
22°
1
Hist. Avg.
38°
22°
2
Hist. Avg.
38°
22°
3
Hist. Avg.
38°
22°
4
Hist. Avg.
38°
22°
5
Hist. Avg.
39°
22°
6
Hist. Avg.
39°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in New Haven
New Haven's January 2027 forecast shows daily high temperatures ranging from 28° to 49°, with overnight lows between 12° and 32°. The average high for January is 39° 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 January weather will actually feel in New Haven. See also: February | March | April.
