S
M
T
W
T
F
S
26
82°
64°
27
84°
64°
28
83°
64°
29
81°
64°
30
81°
63°
31
84°
65°
1
85°
64°
2
84°
64°
3
85°
64°
4
86°
64°
5
86°
60°
6
79°
59°
7
82°
63°
8
80°
59°
9
80°
59°
10
78°
56°
11
77°
62°
12
83°
62°
13
85°
61°
14
79°
55°
15
77°
54°
16
77°
55°
17
79°
59°
18
76°
54°
19
76°
53°
20
77°
53°
21
79°
54°
22
80°
60°
23
83°
59°
24
83°
59°
25
82°
57°
26
83°
60°
27
82°
58°
28
80°
55°
29
81°
60°
30
82°
52°
31
78°
49°
1
73°
49°
2
72°
50°
3
72°
48°
4
73°
49°
5
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Westport
Westport's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 47° and 65°. The average high for August is 80° with an average low of 58°. 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 Westport. See also: September | October | November.