S
M
T
W
T
F
S
26
64°
45°
27
59°
44°
28
57°
42°
29
54°
38°
30
52°
32°
1
55°
39°
2
66°
34°
3
70°
47°
4
64°
44°
5
51°
37°
6
46°
32°
7
59°
32°
8
72°
36°
9
61°
46°
10
60°
40°
11
68°
38°
12
71°
52°
13
71°
43°
14
79°
47°
15
88°
57°
16
79°
51°
17
70°
54°
18
67°
54°
19
55°
44°
20
61°
38°
21
66°
45°
22
66°
51°
23
67°
51°
24
83°
46°
25
85°
58°
26
88°
63°
27
90°
64°
28
86°
65°
29
87°
67°
30
83°
61°
31
81°
64°
1
86°
64°
2
84°
64°
3
82°
62°
4
82°
63°
5
80°
64°
6
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Paul
St. Paul's May 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 61° and 67°. The average high for May is 83° with an average low of 64°. 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. Paul. See also: June | July | August.