S
M
T
W
T
F
S
26
65°
44°
27
66°
51°
28
62°
49°
29
58°
38°
30
59°
35°
1
50°
34°
2
56°
30°
3
69°
44°
4
78°
49°
5
57°
41°
6
56°
40°
7
58°
41°
8
60°
41°
9
64°
43°
10
61°
47°
11
63°
46°
12
66°
45°
13
69°
49°
14
70°
48°
15
72°
49°
16
71°
50°
17
72°
52°
18
66°
52°
19
71°
55°
20
71°
55°
21
69°
46°
22
65°
46°
23
65°
47°
24
67°
47°
25
67°
48°
26
68°
48°
27
67°
49°
28
68°
49°
29
69°
54°
30
70°
59°
31
74°
54°
1
70°
55°
2
74°
59°
3
76°
60°
4
78°
60°
5
79°
61°
6
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plainfield
Plainfield's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 40° and 62°. The average high for May is 69° 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 Plainfield. See also: June | July | August.
