S
M
T
W
T
F
S
27
82°
48°
28
81°
50°
29
84°
51°
30
86°
58°
1
86°
61°
2
87°
66°
3
85°
68°
4
77°
68°
5
76°
61°
6
79°
57°
7
80°
55°
8
85°
59°
9
81°
63°
10
72°
61°
11
70°
62°
12
72°
61°
13
76°
62°
14
78°
56°
15
73°
56°
16
71°
51°
17
69°
50°
18
73°
51°
19
70°
55°
20
69°
54°
21
68°
54°
22
69°
53°
23
69°
50°
24
71°
46°
25
64°
43°
26
65°
47°
27
67°
42°
28
63°
42°
29
65°
45°
30
70°
52°
31
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Decatur
Decatur's October 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 42° and 63°. The average high for October is 72° with an average low of 53°. 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 Decatur. See also: November | December | January.
