S
M
T
W
T
F
S
26
80°
62°
27
81°
63°
28
81°
63°
29
76°
62°
30
76°
63°
31
80°
63°
1
82°
62°
2
82°
61°
3
84°
62°
4
83°
62°
5
81°
60°
6
82°
61°
7
79°
62°
8
80°
60°
9
77°
57°
10
80°
56°
11
78°
59°
12
79°
61°
13
82°
60°
14
81°
54°
15
76°
53°
16
75°
53°
17
76°
55°
18
75°
54°
19
78°
53°
20
76°
53°
21
75°
54°
22
77°
58°
23
79°
57°
24
81°
53°
25
80°
52°
26
79°
55°
27
77°
53°
28
74°
55°
29
78°
59°
30
80°
54°
31
79°
49°
1
75°
49°
2
72°
50°
3
72°
49°
4
73°
49°
5
71°
50°
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 71° to 84°, with overnight lows between 49° and 63°. The average high for August is 78° with an average low of 57°. 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.