S
M
T
W
T
F
S
30
68°
53°
31
57°
50°
1
56°
42°
2
66°
35°
3
69°
46°
4
66°
46°
5
52°
46°
6
54°
47°
7
53°
48°
8
55°
38°
9
56°
34°
10
64°
41°
11
65°
45°
12
54°
43°
13
64°
43°
14
62°
52°
15
62°
43°
16
62°
43°
17
62°
40°
18
55°
34°
19
48°
40°
20
50°
38°
21
55°
43°
22
47°
40°
23
56°
49°
24
63°
48°
25
58°
44°
26
61°
47°
27
57°
42°
28
53°
46°
29
57°
45°
30
53°
43°
1
52°
45°
2
50°
40°
3
50°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. Anthony
St. Anthony's September 2026 forecast shows daily high temperatures ranging from 47° to 63°, with overnight lows between 40° and 49°. The average high for September is 55° with an average low of 44°. 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. Anthony. See also: October | November | December.