S
M
T
W
T
F
S
26
60°
45°
27
61°
42°
28
62°
43°
29
62°
41°
30
61°
41°
1
64°
50°
2
72°
50°
3
67°
48°
4
64°
44°
5
64°
42°
6
65°
46°
7
64°
49°
8
72°
53°
9
71°
47°
10
65°
44°
11
65°
44°
12
66°
48°
13
66°
47°
14
67°
50°
15
67°
50°
16
68°
52°
17
72°
55°
18
76°
56°
19
76°
53°
20
69°
49°
21
70°
50°
22
71°
49°
23
71°
49°
24
70°
50°
25
72°
53°
26
75°
51°
27
76°
52°
28
78°
57°
29
80°
57°
30
80°
55°
31
73°
58°
1
72°
58°
2
74°
57°
3
74°
52°
4
79°
59°
5
81°
60°
6
82°
60°
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 60° to 82°, with overnight lows between 41° and 60°. The average high for May is 70° with an average low of 50°. 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.