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
46°
26°
5
51°
27°
6
59°
36°
7
68°
36°
8
66°
37°
9
57°
39°
10
64°
41°
11
66°
40°
12
58°
38°
13
57°
36°
14
63°
38°
15
59°
37°
16
60°
39°
17
63°
38°
18
65°
43°
19
58°
42°
20
57°
42°
21
62°
41°
22
67°
44°
23
67°
45°
24
68°
45°
25
68°
44°
26
66°
45°
27
61°
44°
28
66°
45°
29
68°
46°
30
70°
46°
31
71°
48°
1
72°
48°
2
71°
47°
3
71°
48°
4
69°
47°
5
64°
47°
6
65°
48°
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 46° to 72°, with overnight lows between 26° and 48°. The average high for May is 64° with an average low of 42°. 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.