S
M
T
W
T
F
S
26
91°
72°
27
87°
70°
28
79°
63°
29
80°
61°
30
87°
60°
31
81°
65°
1
71°
64°
2
78°
60°
3
80°
58°
4
83°
64°
5
81°
67°
6
79°
64°
7
81°
66°
8
84°
63°
9
83°
62°
10
83°
64°
11
79°
63°
12
79°
62°
13
78°
62°
14
81°
61°
15
75°
58°
16
76°
65°
17
85°
66°
18
85°
67°
19
86°
66°
20
81°
65°
21
83°
65°
22
84°
66°
23
84°
65°
24
81°
65°
25
80°
64°
26
82°
64°
27
80°
61°
28
77°
63°
29
80°
62°
30
81°
63°
31
82°
63°
1
81°
62°
2
78°
62°
3
79°
61°
4
79°
62°
5
81°
62°
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 71° to 86°, with overnight lows between 58° and 67°. The average high for August is 81° 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.