S
M
T
W
T
F
S
26
65°
31°
27
72°
34°
28
69°
38°
29
68°
36°
30
50°
40°
1
53°
36°
2
53°
37°
3
49°
33°
4
68°
37°
5
79°
51°
6
53°
41°
7
54°
34°
8
51°
30°
9
54°
28°
10
64°
38°
11
54°
32°
12
53°
32°
13
49°
34°
14
53°
46°
15
59°
50°
16
74°
45°
17
77°
54°
18
86°
46°
19
84°
65°
20
80°
53°
21
58°
36°
22
67°
31°
23
67°
37°
24
52°
46°
25
65°
48°
26
82°
57°
27
76°
51°
28
63°
47°
29
58°
45°
30
57°
40°
31
67°
42°
1
66°
40°
2
70°
45°
3
72°
46°
4
77°
51°
5
77°
49°
6
74°
50°
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 57° to 82°, with overnight lows between 40° and 57°. The average high for May is 70° with an average low of 47°. 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.
