S
M
T
W
T
F
S
26
55°
33°
27
54°
39°
28
62°
41°
29
61°
40°
30
59°
42°
1
56°
38°
2
57°
40°
3
66°
42°
4
67°
47°
5
66°
47°
6
68°
46°
7
63°
43°
8
66°
46°
9
64°
43°
10
59°
38°
11
58°
38°
12
59°
39°
13
61°
45°
14
60°
42°
15
61°
42°
16
65°
51°
17
68°
44°
18
61°
41°
19
62°
44°
20
67°
51°
21
64°
53°
22
68°
48°
23
64°
46°
24
64°
45°
25
70°
56°
26
75°
49°
27
66°
47°
28
66°
49°
29
73°
49°
30
73°
55°
31
76°
56°
1
77°
55°
2
81°
58°
3
80°
57°
4
80°
55°
5
79°
58°
6
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Peter
St. Peter's May 2026 forecast shows daily high temperatures ranging from 54° to 81°, with overnight lows between 33° and 58°. The average high for May is 66° with an average low of 47°. 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. See also: June | July | August.
