S
M
T
W
T
F
S
26
82°
71°
27
82°
72°
28
84°
71°
29
86°
71°
30
85°
72°
1
84°
72°
2
84°
71°
3
86°
73°
4
86°
73°
5
85°
72°
6
85°
68°
7
82°
68°
8
82°
69°
9
83°
70°
10
84°
73°
11
87°
73°
12
86°
72°
13
86°
71°
14
84°
72°
15
86°
74°
16
88°
74°
17
88°
73°
18
87°
74°
19
87°
74°
20
89°
75°
21
87°
74°
22
84°
74°
23
85°
73°
24
84°
74°
25
88°
74°
26
88°
74°
27
87°
72°
28
88°
74°
29
87°
73°
30
89°
75°
31
90°
75°
1
89°
76°
2
87°
75°
3
89°
74°
4
89°
74°
5
91°
73°
6
87°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Petersburg
St. Petersburg's May 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 68° and 76°. The average high for May is 86° with an average low of 73°. 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. Petersburg. See also: June | July | August.
