S
M
T
W
T
F
S
27
77°
56°
28
77°
55°
29
76°
54°
30
75°
53°
1
74°
53°
2
74°
52°
3
75°
53°
4
74°
52°
5
73°
51°
6
73°
51°
7
72°
52°
8
73°
52°
9
73°
51°
10
72°
50°
11
72°
51°
12
67°
43°
13
64°
46°
14
61°
49°
15
59°
46°
16
62°
47°
17
60°
48°
18
67°
43°
19
62°
37°
20
56°
38°
21
55°
43°
22
55°
39°
23
54°
41°
24
58°
46°
25
62°
47°
26
61°
40°
27
63°
33°
28
60°
31°
29
50°
36°
30
51°
35°
31
51°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Dekalb
Dekalb's October 2026 forecast shows daily high temperatures ranging from 50° to 77°, with overnight lows between 31° and 56°. The average high for October is 65° with an average low of 46°. 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 Dekalb. See also: November | December | January.
