S
M
T
W
T
F
S
27
42°
28°
28
50°
37°
29
54°
38°
30
57°
40°
31
60°
42°
1
60°
36°
2
62°
25°
3
60°
24°
4
45°
25°
5
44°
27°
6
44°
26°
7
43°
23°
8
42°
22°
9
41°
31°
10
43°
24°
11
46°
21°
12
41°
24°
13
43°
23°
14
43°
23°
15
40°
24°
16
40°
20°
17
41°
19°
18
39°
28°
19
42°
30°
20
43°
32°
21
44°
34°
22
47°
30°
23
49°
27°
24
43°
27°
25
45°
26°
26
44°
27°
27
53°
38°
28
51°
36°
29
Hist. Avg.
51°
33°
30
Hist. Avg.
52°
33°
31
Hist. Avg.
52°
33°
1
Hist. Avg.
52°
33°
2
Hist. Avg.
52°
33°
3
Hist. Avg.
52°
33°
4
Hist. Avg.
52°
34°
5
Hist. Avg.
53°
34°
6
Hist. Avg.
53°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Trenton
Trenton's January 2027 forecast shows daily high temperatures ranging from 39° to 62°, with overnight lows between 19° and 42°. The average high for January is 47° with an average low of 28°. 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 Trenton. See also: February | March | April.