S
M
T
W
T
F
S
26
77°
45°
27
73°
52°
28
63°
48°
29
57°
37°
30
57°
34°
1
57°
34°
2
59°
37°
3
72°
41°
4
82°
45°
5
55°
45°
6
55°
37°
7
66°
34°
8
70°
41°
9
77°
46°
10
68°
43°
11
72°
45°
12
81°
50°
13
72°
50°
14
77°
45°
15
82°
54°
16
81°
59°
17
82°
63°
18
73°
63°
19
68°
48°
20
64°
45°
21
70°
46°
22
68°
54°
23
75°
55°
24
81°
54°
25
84°
54°
26
84°
57°
27
89°
60°
28
87°
60°
29
81°
59°
30
86°
60°
31
81°
59°
1
84°
56°
2
88°
56°
3
84°
58°
4
83°
63°
5
85°
61°
6
86°
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 81° to 89°, with overnight lows between 56° and 63°. The average high for May is 85° with an average low of 60°. 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.