S
M
T
W
T
F
S
30
53°
44°
31
52°
43°
1
51°
46°
2
53°
46°
3
52°
48°
4
55°
45°
5
53°
44°
6
52°
42°
7
50°
45°
8
50°
47°
9
51°
37°
10
50°
46°
11
52°
47°
12
54°
47°
13
55°
45°
14
54°
40°
15
51°
38°
16
50°
43°
17
52°
44°
18
50°
45°
19
51°
44°
20
52°
42°
21
49°
41°
22
49°
39°
23
46°
39°
24
Hist. Avg.
48°
33°
25
Hist. Avg.
48°
33°
26
Hist. Avg.
47°
32°
27
Hist. Avg.
47°
32°
28
Hist. Avg.
46°
31°
29
Hist. Avg.
46°
31°
30
Hist. Avg.
45°
30°
1
Hist. Avg.
44°
30°
2
Hist. Avg.
44°
29°
3
Hist. Avg.
43°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in St. Michael
St. Michael's September 2026 forecast shows daily high temperatures ranging from 46° to 55°, with overnight lows between 37° and 48°. 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. Michael. See also: October | November | December.
