S
M
T
W
T
F
S
27
N/A
28
N/A
29
86°
49°
30
94°
65°
1
92°
68°
2
73°
54°
3
76°
49°
4
81°
45°
5
77°
45°
6
80°
42°
7
90°
48°
8
87°
51°
9
91°
54°
10
84°
60°
11
80°
57°
12
92°
64°
13
77°
55°
14
74°
58°
15
69°
53°
16
65°
47°
17
63°
43°
18
64°
44°
19
65°
46°
20
68°
48°
21
67°
44°
22
61°
44°
23
59°
39°
24
61°
42°
25
65°
45°
26
70°
44°
27
66°
42°
28
59°
36°
29
57°
41°
30
62°
44°
31
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in East St. Louis
East St. Louis's October 2026 forecast shows daily high temperatures ranging from 57° to 92°, with overnight lows between 36° and 64°. The average high for October is 70° with an average low of 48°. 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 St. Louis. See also: November | December | January.
