S
M
T
W
T
F
S
26
94°
68°
27
95°
70°
28
96°
66°
29
97°
66°
30
95°
67°
31
89°
62°
1
87°
62°
2
89°
62°
3
87°
61°
4
88°
62°
5
89°
63°
6
89°
62°
7
88°
62°
8
89°
61°
9
88°
65°
10
91°
66°
11
89°
63°
12
89°
62°
13
87°
61°
14
87°
60°
15
86°
59°
16
85°
59°
17
86°
61°
18
87°
62°
19
88°
62°
20
89°
65°
21
91°
65°
22
91°
64°
23
87°
63°
24
88°
64°
25
84°
65°
26
86°
63°
27
84°
62°
28
84°
55°
29
82°
56°
30
82°
54°
31
83°
55°
1
83°
54°
2
86°
57°
3
86°
55°
4
85°
60°
5
88°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in West Haven
West Haven's August 2026 forecast shows daily high temperatures ranging from 82° to 97°, with overnight lows between 54° and 70°. The average high for August is 88° with an average low of 62°. 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 West Haven. See also: September | October | November.