S
M
T
W
T
F
S
27
70°
47°
28
72°
49°
29
78°
51°
30
70°
60°
1
70°
61°
2
66°
49°
3
69°
45°
4
72°
52°
5
66°
45°
6
74°
47°
7
78°
57°
8
71°
49°
9
68°
55°
10
80°
53°
11
73°
55°
12
79°
57°
13
64°
50°
14
59°
53°
15
63°
50°
16
60°
40°
17
54°
40°
18
56°
43°
19
57°
44°
20
60°
43°
21
59°
40°
22
57°
42°
23
51°
38°
24
57°
43°
25
61°
44°
26
60°
38°
27
60°
36°
28
49°
32°
29
49°
40°
30
53°
39°
31
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lake Barrington
Lake Barrington's October 2026 forecast shows daily high temperatures ranging from 49° to 80°, with overnight lows between 32° and 57°. The average high for October is 61° with an average low of 44°. 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 Lake Barrington. See also: November | December | January.
