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
67°
42°
4
79°
45°
5
56°
44°
6
58°
36°
7
60°
42°
8
60°
45°
9
73°
52°
10
63°
40°
11
61°
42°
12
68°
52°
13
69°
49°
14
73°
53°
15
66°
50°
16
66°
49°
17
67°
50°
18
72°
52°
19
71°
51°
20
66°
46°
21
65°
47°
22
65°
47°
23
66°
50°
24
67°
50°
25
68°
49°
26
68°
49°
27
69°
50°
28
70°
50°
29
73°
56°
30
78°
57°
31
78°
59°
1
77°
56°
2
72°
57°
3
79°
60°
4
80°
61°
5
80°
60°
6
72°
59°
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 58° to 80°, with overnight lows between 36° and 61°. The average high for May is 69° with an average low of 51°. 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.
