S
M
T
W
T
F
S
26
58°
31°
27
70°
36°
28
59°
49°
29
57°
44°
30
52°
37°
1
49°
32°
2
46°
36°
3
52°
44°
4
63°
50°
5
61°
42°
6
55°
38°
7
50°
37°
8
52°
35°
9
54°
38°
10
55°
39°
11
56°
43°
12
58°
42°
13
58°
44°
14
60°
45°
15
59°
44°
16
61°
56°
17
64°
50°
18
66°
49°
19
63°
47°
20
66°
49°
21
66°
50°
22
63°
43°
23
58°
41°
24
59°
42°
25
59°
43°
26
61°
43°
27
61°
44°
28
62°
43°
29
61°
43°
30
63°
46°
31
64°
49°
1
64°
47°
2
65°
48°
3
67°
54°
4
67°
52°
5
66°
54°
6
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Trenton
Trenton's May 2026 forecast shows daily high temperatures ranging from 50° to 72°, with overnight lows between 35° and 56°. The average high for May is 61° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Trenton. See also: June | July | August.