S
M
T
W
T
F
S
26
75°
55°
27
81°
58°
28
80°
69°
29
72°
67°
30
71°
62°
31
78°
60°
1
84°
63°
2
83°
69°
3
79°
65°
4
84°
58°
5
85°
56°
6
88°
73°
7
92°
74°
8
87°
71°
9
90°
65°
10
85°
61°
11
85°
64°
12
84°
62°
13
81°
62°
14
82°
61°
15
80°
57°
16
80°
53°
17
72°
64°
18
81°
65°
19
84°
63°
20
85°
62°
21
69°
64°
22
71°
66°
23
79°
65°
24
81°
63°
25
79°
58°
26
80°
55°
27
81°
68°
28
80°
65°
29
78°
61°
30
80°
68°
31
83°
68°
1
81°
70°
2
84°
67°
3
79°
65°
4
80°
65°
5
81°
64°
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 78° to 84°, with overnight lows between 61° and 70°. The average high for August is 81° with an average low of 66°. 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.