S
M
T
W
T
F
S
26
29°
20°
27
40°
17°
28
50°
22°
29
59°
29°
30
69°
32°
1
65°
40°
2
69°
34°
3
61°
40°
4
45°
29°
5
49°
22°
6
61°
29°
7
67°
46°
8
62°
34°
9
59°
38°
10
72°
47°
11
66°
40°
12
71°
45°
13
70°
44°
14
68°
44°
15
66°
42°
16
64°
41°
17
61°
41°
18
59°
39°
19
61°
40°
20
62°
41°
21
64°
39°
22
60°
44°
23
67°
44°
24
67°
45°
25
68°
46°
26
70°
46°
27
67°
45°
28
64°
45°
29
69°
44°
30
61°
45°
31
67°
46°
1
70°
46°
2
63°
44°
3
61°
41°
4
60°
38°
5
61°
45°
6
62°
47°
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 59° to 72°, with overnight lows between 34° and 47°. The average high for May is 65° with an average low of 43°. 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.