S
M
T
W
T
F
S
26
59°
50°
27
64°
49°
28
71°
46°
29
75°
47°
30
74°
46°
1
75°
46°
2
59°
50°
3
61°
52°
4
60°
54°
5
64°
55°
6
64°
53°
7
63°
52°
8
70°
52°
9
76°
53°
10
75°
54°
11
74°
53°
12
81°
51°
13
77°
51°
14
74°
52°
15
73°
53°
16
71°
50°
17
74°
53°
18
74°
53°
19
73°
54°
20
75°
54°
21
74°
52°
22
72°
53°
23
75°
54°
24
76°
54°
25
76°
53°
26
75°
52°
27
68°
53°
28
68°
52°
29
69°
53°
30
69°
54°
31
70°
55°
1
72°
55°
2
75°
54°
3
73°
54°
4
70°
53°
5
70°
53°
6
69°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Stinson Beach
Stinson Beach's May 2026 forecast shows daily high temperatures ranging from 60° to 81°, with overnight lows between 50° and 55°. The average high for May is 71° with an average low of 53°. 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 Stinson Beach. See also: June | July | August.