S
M
T
W
T
F
S
26
57°
44°
27
56°
42°
28
55°
40°
29
55°
43°
30
56°
44°
1
56°
44°
2
57°
43°
3
56°
39°
4
55°
38°
5
56°
38°
6
59°
39°
7
64°
46°
8
63°
45°
9
61°
44°
10
63°
41°
11
59°
40°
12
58°
41°
13
59°
40°
14
58°
42°
15
60°
41°
16
61°
43°
17
61°
43°
18
62°
44°
19
62°
42°
20
63°
43°
21
64°
45°
22
67°
48°
23
68°
52°
24
66°
53°
25
72°
51°
26
64°
48°
27
65°
54°
28
73°
54°
29
73°
47°
30
67°
47°
31
65°
48°
1
64°
47°
2
72°
49°
3
75°
54°
4
76°
55°
5
76°
55°
6
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Petersburgh
Petersburgh's May 2026 forecast shows daily high temperatures ranging from 55° to 76°, with overnight lows between 38° and 55°. The average high for May is 63° with an average low of 45°. 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 Petersburgh. See also: June | July | August.
