S
M
T
W
T
F
S
26
82°
58°
27
86°
58°
28
83°
64°
29
72°
61°
30
77°
61°
31
81°
60°
1
83°
59°
2
80°
69°
3
80°
57°
4
83°
56°
5
84°
57°
6
88°
67°
7
87°
66°
8
84°
67°
9
86°
61°
10
81°
64°
11
83°
59°
12
78°
60°
13
76°
53°
14
71°
54°
15
72°
54°
16
72°
56°
17
73°
58°
18
76°
57°
19
75°
61°
20
76°
58°
21
75°
57°
22
74°
56°
23
80°
61°
24
74°
55°
25
75°
56°
26
78°
60°
27
81°
61°
28
80°
54°
29
72°
51°
30
71°
51°
31
70°
50°
1
71°
49°
2
71°
51°
3
73°
58°
4
75°
57°
5
73°
58°
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 70° to 86°, with overnight lows between 49° and 64°. The average high for August is 75° with an average low of 56°. 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.