S
M
T
W
T
F
S
26
93°
58°
27
86°
61°
28
90°
55°
29
67°
50°
30
60°
50°
1
62°
52°
2
73°
40°
3
78°
46°
4
88°
67°
5
84°
49°
6
76°
40°
7
73°
50°
8
88°
55°
9
94°
57°
10
80°
49°
11
81°
53°
12
93°
59°
13
93°
56°
14
90°
56°
15
90°
59°
16
91°
59°
17
81°
54°
18
78°
57°
19
85°
59°
20
76°
59°
21
83°
56°
22
75°
52°
23
78°
60°
24
87°
55°
25
77°
52°
26
78°
53°
27
80°
61°
28
83°
62°
29
79°
61°
30
80°
61°
31
79°
60°
1
79°
59°
2
80°
64°
3
82°
64°
4
82°
61°
5
81°
63°
6
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Petersburg
Petersburg's May 2026 forecast shows daily high temperatures ranging from 73° to 94°, with overnight lows between 40° and 67°. The average high for May is 83° with an average low of 57°. 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 Petersburg. See also: June | July | August.
