S
M
T
W
T
F
S
28
81°
64°
29
88°
65°
30
88°
61°
1
89°
58°
2
85°
58°
3
82°
65°
4
86°
66°
5
88°
59°
6
84°
58°
7
82°
60°
8
82°
59°
9
81°
59°
10
81°
60°
11
83°
62°
12
88°
61°
13
85°
64°
14
83°
65°
15
84°
59°
16
83°
60°
17
82°
65°
18
87°
64°
19
85°
61°
20
83°
64°
21
81°
65°
22
85°
64°
23
82°
60°
24
82°
60°
25
84°
59°
26
83°
64°
27
87°
65°
28
84°
60°
29
82°
60°
30
83°
59°
31
82°
60°
1
83°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Plainfield
Plainfield's July 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 58° and 66°. The average high for July is 84° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Plainfield. See also: August | September | October.