S
M
T
W
T
F
S
26
84°
57°
27
84°
59°
28
82°
72°
29
81°
68°
30
77°
66°
31
84°
63°
1
88°
68°
2
82°
73°
3
81°
66°
4
83°
62°
5
80°
72°
6
84°
73°
7
87°
73°
8
85°
72°
9
86°
72°
10
88°
71°
11
87°
70°
12
83°
66°
13
80°
63°
14
80°
67°
15
79°
65°
16
79°
63°
17
80°
66°
18
77°
65°
19
77°
69°
20
78°
65°
21
77°
62°
22
76°
67°
23
80°
69°
24
82°
69°
25
82°
68°
26
76°
67°
27
76°
68°
28
75°
69°
29
78°
67°
30
80°
68°
31
80°
67°
1
79°
63°
2
73°
60°
3
72°
62°
4
73°
61°
5
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Westbrook
Westbrook's August 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 59° and 73°. The average high for August is 80° with an average low of 67°. 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 Westbrook. See also: September | October | November.