S
M
T
W
T
F
S
27
73°
45°
28
74°
44°
29
78°
48°
30
67°
59°
1
70°
60°
2
65°
48°
3
69°
42°
4
72°
49°
5
69°
43°
6
73°
47°
7
79°
52°
8
72°
49°
9
68°
55°
10
79°
53°
11
73°
56°
12
81°
56°
13
67°
50°
14
63°
51°
15
63°
46°
16
61°
41°
17
55°
39°
18
57°
42°
19
61°
43°
20
61°
43°
21
60°
39°
22
58°
41°
23
53°
38°
24
58°
42°
25
62°
44°
26
62°
38°
27
61°
35°
28
50°
31°
29
50°
40°
30
54°
38°
31
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Carpentersville
Carpentersville's October 2026 forecast shows daily high temperatures ranging from 50° to 81°, with overnight lows between 31° and 56°. The average high for October is 62° with an average low of 44°. 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 Carpentersville. See also: November | December | January.