S
M
T
W
T
F
S
27
79°
47°
28
75°
46°
29
68°
47°
30
69°
54°
1
71°
54°
2
77°
53°
3
77°
54°
4
76°
53°
5
77°
54°
6
76°
54°
7
77°
45°
8
74°
42°
9
64°
41°
10
62°
42°
11
64°
47°
12
63°
51°
13
68°
53°
14
73°
46°
15
74°
44°
16
70°
44°
17
67°
39°
18
60°
42°
19
61°
38°
20
59°
47°
21
61°
47°
22
67°
46°
23
69°
42°
24
60°
36°
25
58°
44°
26
57°
45°
27
59°
35°
28
56°
33°
29
54°
32°
30
51°
35°
31
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in East Peoria
East Peoria's October 2026 forecast shows daily high temperatures ranging from 51° to 79°, with overnight lows between 32° and 54°. The average high for October is 67° with an average low of 45°. 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 East Peoria. See also: November | December | January.