S
M
T
W
T
F
S
26
59°
51°
27
59°
50°
28
62°
49°
29
62°
51°
30
57°
52°
1
56°
52°
2
58°
54°
3
59°
54°
4
59°
50°
5
59°
51°
6
68°
54°
7
70°
54°
8
70°
52°
9
67°
53°
10
69°
55°
11
75°
56°
12
70°
59°
13
66°
61°
14
67°
59°
15
67°
58°
16
65°
56°
17
65°
56°
18
64°
55°
19
67°
52°
20
63°
51°
21
62°
53°
22
63°
52°
23
65°
54°
24
68°
55°
25
69°
55°
26
68°
54°
27
63°
53°
28
63°
52°
29
64°
55°
30
68°
56°
31
68°
56°
1
69°
55°
2
68°
56°
3
66°
56°
4
63°
57°
5
63°
56°
6
64°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Morro Bay
Morro Bay's May 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 51° and 61°. The average high for May is 66° with an average low of 55°. 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 Morro Bay. See also: June | July | August.