S
M
T
W
T
F
S
30
74°
50°
31
74°
54°
1
73°
55°
2
73°
51°
3
74°
52°
4
75°
52°
5
72°
51°
6
72°
48°
7
73°
50°
8
80°
52°
9
82°
54°
10
81°
57°
11
81°
56°
12
82°
57°
13
82°
55°
14
78°
47°
15
75°
50°
16
74°
54°
17
79°
55°
18
80°
50°
19
79°
51°
20
78°
54°
21
76°
55°
22
78°
54°
23
78°
51°
24
76°
53°
25
76°
55°
26
77°
55°
27
77°
53°
28
68°
50°
29
66°
52°
30
68°
51°
1
66°
48°
2
63°
45°
3
62°
47°
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 62° to 82°, with overnight lows between 45° and 57°. The average high for September is 75° with an average low of 52°. 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.
