S
M
T
W
T
F
S
26
62°
33°
27
66°
34°
28
62°
42°
29
51°
39°
30
51°
33°
1
49°
29°
2
43°
28°
3
59°
27°
4
70°
44°
5
60°
45°
6
50°
35°
7
53°
31°
8
58°
36°
9
63°
40°
10
54°
34°
11
54°
33°
12
57°
28°
13
56°
41°
14
N/A
15
65°
45°
16
67°
52°
17
75°
57°
18
83°
63°
19
78°
55°
20
63°
40°
21
57°
40°
22
58°
44°
23
65°
46°
24
65°
52°
25
67°
54°
26
69°
54°
27
70°
46°
28
64°
51°
29
67°
52°
30
72°
50°
31
64°
45°
1
63°
43°
2
62°
43°
3
64°
44°
4
65°
49°
5
70°
54°
6
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Petersburg
Petersburg's May 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 40° and 63°. The average high for May is 67° with an average low of 49°. 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.
