S
M
T
W
T
F
S
30
54°
47°
31
54°
47°
1
53°
46°
2
53°
47°
3
52°
46°
4
53°
46°
5
51°
45°
6
52°
44°
7
51°
43°
8
52°
44°
9
50°
45°
10
51°
45°
11
52°
44°
12
53°
45°
13
52°
44°
14
52°
44°
15
51°
43°
16
51°
38°
17
50°
43°
18
51°
43°
19
50°
42°
20
51°
42°
21
51°
41°
22
50°
42°
23
50°
42°
24
49°
40°
25
50°
41°
26
49°
40°
27
47°
38°
28
48°
39°
29
46°
41°
30
Hist. Avg.
47°
37°
1
Hist. Avg.
46°
37°
2
Hist. Avg.
46°
37°
3
Hist. Avg.
46°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in St. Paul
St. Paul's September 2026 forecast shows daily high temperatures ranging from 46° to 54°, with overnight lows between 38° and 47°. The average high for September is 51° with an average low of 43°. 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.
