S
M
T
W
T
F
S
26
78°
61°
27
80°
66°
28
82°
71°
29
79°
69°
30
75°
68°
31
84°
65°
1
85°
70°
2
82°
72°
3
81°
71°
4
84°
69°
5
84°
73°
6
86°
69°
7
86°
70°
8
90°
70°
9
87°
67°
10
86°
66°
11
84°
64°
12
84°
63°
13
83°
62°
14
80°
64°
15
81°
61°
16
79°
60°
17
82°
64°
18
81°
60°
19
79°
66°
20
81°
63°
21
80°
59°
22
78°
64°
23
84°
66°
24
85°
66°
25
85°
65°
26
81°
65°
27
77°
64°
28
77°
65°
29
81°
65°
30
83°
64°
31
82°
64°
1
83°
60°
2
75°
57°
3
74°
58°
4
74°
56°
5
75°
56°
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 74° to 90°, with overnight lows between 56° and 73°. The average high for August is 82° with an average low of 64°. 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.