S
M
T
W
T
F
S
27
73°
50°
28
75°
49°
29
79°
50°
30
65°
60°
1
72°
60°
2
68°
47°
3
69°
47°
4
72°
46°
5
66°
43°
6
67°
48°
7
73°
54°
8
74°
51°
9
71°
54°
10
72°
51°
11
67°
50°
12
65°
46°
13
65°
45°
14
67°
46°
15
63°
44°
16
66°
48°
17
68°
48°
18
67°
47°
19
60°
42°
20
54°
40°
21
54°
37°
22
55°
40°
23
63°
47°
24
65°
46°
25
64°
45°
26
54°
42°
27
52°
39°
28
59°
44°
29
57°
41°
30
57°
44°
31
61°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Plainfield
Plainfield's October 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 37° and 54°. The average high for October is 64° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Plainfield. See also: November | December | January.
