S
M
T
W
T
F
S
26
53°
36°
27
53°
38°
28
54°
39°
29
55°
39°
30
55°
38°
1
56°
38°
2
57°
36°
3
56°
35°
4
56°
35°
5
57°
36°
6
56°
36°
7
57°
35°
8
57°
38°
9
58°
38°
10
57°
37°
11
58°
37°
12
57°
38°
13
58°
36°
14
56°
37°
15
59°
35°
16
59°
35°
17
61°
36°
18
66°
43°
19
68°
42°
20
67°
42°
21
68°
36°
22
66°
37°
23
62°
39°
24
66°
41°
25
69°
42°
26
69°
44°
27
70°
39°
28
64°
37°
29
63°
37°
30
67°
41°
31
69°
47°
1
71°
46°
2
72°
46°
3
71°
47°
4
72°
46°
5
73°
46°
6
71°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mill Bay
Mill Bay's May 2026 forecast shows daily high temperatures ranging from 53° to 73°, with overnight lows between 35° and 47°. The average high for May is 62° with an average low of 39°. 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 Mill Bay. See also: June | July | August.
