S
M
T
W
T
F
S
27
71°
55°
28
72°
55°
29
68°
47°
30
71°
54°
1
72°
53°
2
65°
52°
3
62°
52°
4
65°
51°
5
65°
51°
6
68°
50°
7
62°
47°
8
59°
40°
9
56°
39°
10
56°
40°
11
57°
42°
12
63°
49°
13
67°
48°
14
66°
49°
15
67°
48°
16
59°
46°
17
55°
37°
18
53°
35°
19
53°
39°
20
55°
46°
21
62°
47°
22
60°
46°
23
52°
45°
24
57°
45°
25
60°
46°
26
60°
44°
27
53°
37°
28
49°
37°
29
55°
42°
30
54°
30°
31
49°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Barrington
Barrington's October 2026 forecast shows daily high temperatures ranging from 49° to 72°, with overnight lows between 30° and 55°. The average high for October is 61° 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 Barrington. See also: November | December | January.