S
M
T
W
T
F
S
27
75°
53°
28
76°
49°
29
82°
51°
30
70°
60°
1
74°
61°
2
69°
51°
3
72°
46°
4
76°
48°
5
72°
45°
6
76°
46°
7
83°
54°
8
79°
50°
9
81°
54°
10
81°
58°
11
81°
52°
12
88°
60°
13
86°
67°
14
71°
62°
15
72°
53°
16
56°
43°
17
56°
36°
18
64°
38°
19
69°
39°
20
71°
44°
21
73°
44°
22
75°
46°
23
74°
49°
24
73°
49°
25
76°
48°
26
75°
50°
27
70°
50°
28
79°
57°
29
74°
47°
30
71°
55°
31
68°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Peoria
Peoria's October 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 47° and 57°. The average high for October is 73° 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 Peoria. See also: November | December | January.