S
M
T
W
T
F
S
27
98°
73°
28
95°
73°
29
94°
75°
30
90°
77°
1
80°
68°
2
81°
68°
3
70°
66°
4
77°
67°
5
85°
64°
6
88°
59°
7
90°
61°
8
89°
61°
9
90°
62°
10
90°
61°
11
88°
67°
12
86°
69°
13
91°
74°
14
91°
76°
15
83°
59°
16
63°
49°
17
65°
42°
18
68°
43°
19
73°
46°
20
80°
52°
21
82°
53°
22
83°
55°
23
N/A
24
81°
58°
25
78°
56°
26
75°
58°
27
76°
58°
28
81°
61°
29
81°
59°
30
74°
59°
31
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Decatur
Decatur's October 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 45° and 61°. The average high for October is 77° with an average low of 57°. 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.
