S
M
T
W
T
F
S
26
59°
41°
27
69°
38°
28
62°
40°
29
65°
48°
30
63°
47°
1
64°
42°
2
61°
46°
3
60°
43°
4
72°
42°
5
82°
54°
6
68°
55°
7
65°
49°
8
66°
44°
9
62°
51°
10
79°
51°
11
60°
42°
12
65°
46°
13
58°
49°
14
61°
48°
15
65°
48°
16
72°
53°
17
73°
52°
18
76°
57°
19
75°
54°
20
74°
53°
21
74°
54°
22
75°
52°
23
78°
57°
24
77°
56°
25
78°
57°
26
79°
58°
27
80°
59°
28
80°
59°
29
79°
58°
30
81°
60°
31
80°
59°
1
79°
56°
2
72°
53°
3
73°
52°
4
76°
59°
5
76°
60°
6
80°
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 58° to 81°, with overnight lows between 42° and 60°. The average high for May is 74° with an average low of 54°. 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.
