S
M
T
W
T
F
S
30
88°
68°
31
94°
68°
1
92°
67°
2
86°
68°
3
87°
71°
4
91°
72°
5
90°
70°
6
86°
67°
7
80°
66°
8
78°
62°
9
77°
61°
10
78°
62°
11
74°
57°
12
75°
56°
13
74°
57°
14
73°
54°
15
78°
59°
16
75°
55°
17
74°
59°
18
74°
59°
19
74°
56°
20
73°
58°
21
76°
59°
22
77°
59°
23
76°
58°
24
77°
59°
25
76°
58°
26
75°
56°
27
76°
57°
28
76°
56°
29
75°
55°
30
74°
57°
1
74°
57°
2
73°
55°
3
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. Paul
St. Paul's September 2026 forecast shows daily high temperatures ranging from 73° to 92°, with overnight lows between 54° and 72°. The average high for September is 78° 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 September weather will actually feel in St. Paul. See also: October | November | December.
