S
M
T
W
T
F
S
26
61°
41°
27
64°
41°
28
59°
46°
29
59°
50°
30
63°
49°
1
73°
48°
2
68°
51°
3
68°
54°
4
61°
52°
5
60°
48°
6
58°
45°
7
55°
41°
8
64°
39°
9
64°
43°
10
55°
39°
11
55°
34°
12
63°
34°
13
59°
43°
14
50°
39°
15
57°
41°
16
59°
41°
17
64°
48°
18
59°
46°
19
60°
54°
20
65°
52°
21
68°
57°
22
72°
60°
23
72°
58°
24
67°
57°
25
64°
57°
26
70°
57°
27
67°
56°
28
67°
55°
29
65°
53°
30
64°
53°
31
65°
54°
1
60°
48°
2
61°
47°
3
64°
52°
4
65°
54°
5
67°
55°
6
68°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St Peter's
St Peter's's May 2026 forecast shows daily high temperatures ranging from 60° to 72°, with overnight lows between 47° and 60°. The average high for May is 66° with an average low of 54°. 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 Peter's. See also: June | July | August.