S
M
T
W
T
F
S
26
61°
38°
27
70°
38°
28
65°
47°
29
71°
47°
30
62°
41°
1
67°
47°
2
64°
45°
3
61°
44°
4
74°
54°
5
87°
63°
6
70°
53°
7
64°
45°
8
64°
46°
9
65°
49°
10
71°
55°
11
69°
50°
12
66°
48°
13
70°
52°
14
71°
53°
15
70°
53°
16
72°
54°
17
75°
52°
18
79°
56°
19
78°
56°
20
77°
55°
21
77°
54°
22
75°
50°
23
70°
48°
24
69°
50°
25
71°
49°
26
72°
51°
27
72°
50°
28
73°
51°
29
72°
50°
30
72°
51°
31
73°
59°
1
78°
57°
2
75°
53°
3
75°
57°
4
79°
60°
5
77°
57°
6
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in North Plainfield
North Plainfield's May 2026 forecast shows daily high temperatures ranging from 64° to 87°, with overnight lows between 45° and 63°. The average high for May is 73° with an average low of 53°. 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 North Plainfield. See also: June | July | August.