S
M
T
W
T
F
S
27
88°
62°
28
86°
62°
29
90°
57°
30
92°
59°
1
89°
70°
2
89°
70°
3
85°
71°
4
78°
68°
5
81°
60°
6
81°
58°
7
77°
53°
8
79°
54°
9
80°
57°
10
78°
58°
11
75°
51°
12
76°
50°
13
74°
50°
14
78°
49°
15
74°
52°
16
80°
55°
17
74°
54°
18
79°
53°
19
80°
50°
20
75°
45°
21
70°
43°
22
70°
43°
23
71°
44°
24
74°
50°
25
75°
50°
26
77°
51°
27
77°
52°
28
73°
50°
29
68°
47°
30
71°
44°
31
72°
43°
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 68° to 89°, with overnight lows between 43° and 71°. The average high for October is 77° 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.
