S
M
T
W
T
F
S
26
67°
52°
27
62°
42°
28
59°
41°
29
58°
40°
30
54°
38°
1
51°
40°
2
58°
43°
3
61°
45°
4
60°
45°
5
62°
44°
6
66°
45°
7
59°
40°
8
58°
40°
9
58°
41°
10
60°
47°
11
60°
51°
12
62°
44°
13
59°
43°
14
59°
43°
15
62°
45°
16
62°
44°
17
64°
47°
18
63°
44°
19
63°
44°
20
64°
48°
21
65°
52°
22
68°
47°
23
64°
48°
24
65°
46°
25
65°
47°
26
66°
48°
27
66°
48°
28
67°
51°
29
68°
55°
30
68°
52°
31
72°
53°
1
76°
56°
2
78°
60°
3
78°
59°
4
75°
55°
5
79°
59°
6
73°
61°
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 51° to 79°, with overnight lows between 38° and 61°. The average high for May is 64° 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. Paul. See also: June | July | August.