S
M
T
W
T
F
S
26
65°
45°
27
61°
40°
28
62°
45°
29
66°
44°
30
70°
42°
1
63°
41°
2
63°
40°
3
62°
43°
4
64°
45°
5
63°
43°
6
62°
43°
7
63°
44°
8
69°
45°
9
65°
44°
10
64°
43°
11
64°
44°
12
65°
46°
13
73°
54°
14
76°
53°
15
69°
52°
16
76°
54°
17
74°
50°
18
72°
48°
19
69°
47°
20
73°
55°
21
76°
50°
22
72°
48°
23
69°
49°
24
69°
48°
25
72°
50°
26
75°
56°
27
78°
57°
28
80°
50°
29
76°
52°
30
73°
55°
31
72°
57°
1
75°
52°
2
75°
51°
3
76°
50°
4
73°
52°
5
74°
54°
6
77°
58°
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 61° to 80°, with overnight lows between 40° and 58°. The average high for May is 70° with an average low of 49°. 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.
