S
M
T
W
T
F
S
26
91°
76°
27
92°
76°
28
91°
75°
29
89°
76°
30
89°
76°
31
91°
75°
1
92°
77°
2
91°
75°
3
91°
74°
4
91°
75°
5
90°
75°
6
86°
74°
7
88°
69°
8
86°
70°
9
85°
69°
10
85°
69°
11
88°
75°
12
91°
74°
13
91°
74°
14
90°
69°
15
87°
68°
16
85°
74°
17
84°
74°
18
88°
68°
19
85°
68°
20
84°
69°
21
84°
67°
22
86°
67°
23
86°
68°
24
87°
67°
25
87°
69°
26
88°
72°
27
89°
73°
28
88°
74°
29
90°
74°
30
88°
72°
31
87°
65°
1
83°
64°
2
81°
65°
3
82°
66°
4
82°
65°
5
83°
65°
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 81° to 92°, with overnight lows between 64° and 77°. The average high for August is 87° with an average low of 71°. 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.