S
M
T
W
T
F
S
26
86°
77°
27
90°
76°
28
91°
77°
29
91°
76°
30
90°
74°
1
78°
62°
2
78°
58°
3
83°
55°
4
85°
62°
5
91°
72°
6
89°
77°
7
79°
69°
8
91°
68°
9
93°
72°
10
89°
72°
11
85°
66°
12
87°
66°
13
88°
65°
14
91°
64°
15
89°
69°
16
90°
70°
17
89°
79°
18
91°
79°
19
88°
70°
20
87°
68°
21
83°
70°
22
86°
71°
23
83°
70°
24
87°
73°
25
87°
69°
26
87°
72°
27
86°
71°
28
90°
73°
29
91°
74°
30
90°
74°
31
89°
75°
1
88°
71°
2
89°
72°
3
87°
71°
4
88°
72°
5
89°
72°
6
90°
74°
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 86° to 91°, with overnight lows between 71° and 75°. The average high for May is 89° with an average low of 73°. 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.