S
M
T
W
T
F
S
26
55°
41°
27
56°
44°
28
56°
40°
29
57°
42°
30
56°
44°
1
57°
45°
2
56°
48°
3
57°
46°
4
56°
44°
5
57°
42°
6
56°
43°
7
60°
48°
8
58°
48°
9
57°
45°
10
57°
42°
11
58°
42°
12
58°
46°
13
57°
43°
14
57°
47°
15
58°
47°
16
57°
43°
17
60°
49°
18
58°
50°
19
60°
49°
20
59°
44°
21
60°
51°
22
68°
48°
23
67°
43°
24
58°
48°
25
59°
51°
26
58°
44°
27
67°
51°
28
64°
43°
29
59°
48°
30
67°
50°
31
70°
44°
1
60°
43°
2
62°
52°
3
63°
48°
4
60°
50°
5
60°
44°
6
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Winchester Bay
Winchester Bay's May 2026 forecast shows daily high temperatures ranging from 55° to 70°, with overnight lows between 40° and 52°. The average high for May is 59° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Winchester Bay. See also: June | July | August.
