S
M
T
W
T
F
S
26
89°
70°
27
90°
70°
28
89°
69°
29
88°
69°
30
88°
64°
31
82°
63°
1
82°
63°
2
83°
64°
3
83°
64°
4
84°
63°
5
84°
63°
6
86°
65°
7
88°
68°
8
86°
67°
9
83°
68°
10
86°
63°
11
85°
61°
12
86°
62°
13
85°
66°
14
86°
67°
15
88°
65°
16
88°
68°
17
89°
67°
18
89°
66°
19
87°
60°
20
83°
60°
21
81°
61°
22
81°
59°
23
82°
59°
24
81°
60°
25
82°
60°
26
85°
59°
27
84°
60°
28
82°
62°
29
82°
60°
30
79°
60°
31
82°
63°
1
86°
58°
2
83°
57°
3
79°
56°
4
80°
58°
5
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Barrington
Barrington's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 56° and 70°. The average high for August is 84° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Barrington. See also: September | October | November.