S
M
T
W
T
F
S
26
84°
74°
27
94°
76°
28
92°
73°
29
87°
75°
30
84°
76°
1
85°
77°
2
84°
73°
3
82°
69°
4
87°
71°
5
90°
73°
6
87°
74°
7
86°
75°
8
90°
78°
9
90°
78°
10
90°
79°
11
92°
80°
12
89°
76°
13
86°
77°
14
88°
77°
15
94°
76°
16
90°
80°
17
93°
78°
18
96°
78°
19
96°
77°
20
93°
75°
21
90°
77°
22
91°
79°
23
91°
78°
24
90°
77°
25
90°
78°
26
89°
76°
27
89°
75°
28
85°
77°
29
86°
76°
30
87°
75°
31
87°
78°
1
87°
77°
2
88°
77°
3
88°
78°
4
87°
79°
5
87°
77°
6
88°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Pete Beach
St. Pete Beach's May 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 75° and 79°. The average high for May is 88° with an average low of 77°. 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 St. Pete Beach. See also: June | July | August.