S
M
T
W
T
F
S
27
83°
56°
28
81°
57°
29
83°
57°
30
82°
56°
1
82°
56°
2
81°
55°
3
81°
47°
4
74°
46°
5
72°
45°
6
71°
46°
7
75°
52°
8
76°
53°
9
71°
52°
10
78°
50°
11
77°
50°
12
Hist. Avg.
73°
46°
13
Hist. Avg.
73°
46°
14
Hist. Avg.
72°
46°
15
Hist. Avg.
72°
45°
16
Hist. Avg.
72°
45°
17
Hist. Avg.
72°
45°
18
Hist. Avg.
71°
44°
19
Hist. Avg.
71°
44°
20
Hist. Avg.
70°
44°
21
Hist. Avg.
70°
43°
22
Hist. Avg.
70°
43°
23
Hist. Avg.
70°
43°
24
Hist. Avg.
69°
42°
25
Hist. Avg.
69°
42°
26
Hist. Avg.
69°
42°
27
Hist. Avg.
68°
41°
28
Hist. Avg.
68°
41°
29
Hist. Avg.
68°
41°
30
Hist. Avg.
67°
40°
31
Hist. Avg.
67°
40°
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 71° to 83°, with overnight lows between 45° and 57°. The average high for October is 78° with an average low of 52°. 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.
