S
M
T
W
T
F
S
26
72°
54°
27
72°
55°
28
73°
55°
29
73°
54°
30
70°
53°
31
66°
51°
1
66°
49°
2
67°
52°
3
67°
53°
4
68°
53°
5
70°
54°
6
71°
55°
7
73°
55°
8
74°
50°
9
67°
51°
10
73°
53°
11
72°
52°
12
71°
49°
13
68°
49°
14
69°
50°
15
70°
51°
16
71°
49°
17
68°
49°
18
70°
54°
19
70°
48°
20
67°
49°
21
67°
54°
22
68°
54°
23
68°
53°
24
67°
48°
25
67°
51°
26
68°
52°
27
71°
54°
28
74°
54°
29
74°
52°
30
73°
53°
31
74°
52°
1
73°
54°
2
74°
53°
3
74°
50°
4
73°
53°
5
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Winchester Bay
Winchester Bay's August 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 48° and 55°. The average high for August is 70° with an average low of 52°. 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 Winchester Bay. See also: September | October | November.
