S
M
T
W
T
F
S
28
85°
73°
29
93°
73°
30
93°
73°
1
93°
73°
2
93°
75°
3
92°
73°
4
89°
69°
5
86°
67°
6
87°
66°
7
87°
66°
8
83°
65°
9
84°
64°
10
86°
67°
11
82°
67°
12
81°
66°
13
82°
67°
14
84°
67°
15
86°
66°
16
87°
69°
17
88°
69°
18
88°
68°
19
86°
68°
20
84°
67°
21
83°
68°
22
84°
70°
23
87°
69°
24
86°
68°
25
83°
67°
26
84°
69°
27
87°
70°
28
88°
69°
29
87°
68°
30
86°
67°
31
79°
67°
1
82°
68°
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 79° to 93°, with overnight lows between 64° and 75°. The average high for July is 86° with an average low of 69°. 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.