S
M
T
W
T
F
S
26
85°
69°
27
85°
69°
28
84°
68°
29
81°
69°
30
80°
69°
31
85°
68°
1
84°
69°
2
85°
69°
3
86°
68°
4
87°
69°
5
86°
68°
6
85°
67°
7
80°
68°
8
82°
64°
9
80°
63°
10
82°
62°
11
81°
67°
12
83°
68°
13
86°
68°
14
85°
61°
15
83°
61°
16
80°
62°
17
81°
66°
18
79°
61°
19
82°
60°
20
80°
60°
21
80°
61°
22
82°
64°
23
84°
60°
24
83°
59°
25
81°
60°
26
80°
62°
27
78°
60°
28
77°
63°
29
83°
66°
30
84°
64°
31
83°
57°
1
81°
56°
2
76°
58°
3
76°
57°
4
77°
57°
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 75° to 87°, with overnight lows between 56° and 69°. 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.