S
M
T
W
T
F
S
26
57°
41°
27
65°
43°
28
68°
52°
29
55°
45°
30
57°
41°
1
49°
39°
2
50°
37°
3
64°
37°
4
75°
49°
5
66°
46°
6
58°
46°
7
58°
41°
8
58°
42°
9
71°
50°
10
62°
41°
11
57°
38°
12
59°
38°
13
61°
46°
14
67°
45°
15
67°
40°
16
79°
53°
17
79°
59°
18
80°
60°
19
84°
61°
20
71°
46°
21
62°
43°
22
64°
48°
23
58°
52°
24
68°
56°
25
73°
53°
26
78°
61°
27
80°
56°
28
74°
50°
29
73°
48°
30
62°
49°
31
69°
54°
1
71°
55°
2
75°
55°
3
74°
61°
4
77°
60°
5
78°
59°
6
76°
66°
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 62° to 80°, with overnight lows between 48° and 66°. The average high for May is 73° with an average low of 56°. 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.
