S
M
T
W
T
F
S
27
72°
49°
28
73°
52°
29
78°
54°
30
70°
60°
1
70°
61°
2
67°
52°
3
69°
48°
4
73°
53°
5
68°
47°
6
74°
50°
7
79°
57°
8
73°
53°
9
71°
56°
10
80°
62°
11
76°
61°
12
87°
68°
13
82°
64°
14
67°
56°
15
62°
51°
16
60°
39°
17
58°
38°
18
58°
42°
19
64°
46°
20
65°
47°
21
65°
45°
22
60°
42°
23
61°
45°
24
58°
37°
25
62°
43°
26
62°
37°
27
61°
35°
28
50°
31°
29
50°
39°
30
54°
38°
31
61°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Downers Grove
Downers Grove's October 2026 forecast shows daily high temperatures ranging from 50° to 87°, with overnight lows between 31° and 68°. The average high for October is 63° 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 Downers Grove. See also: November | December | January.
