S
M
T
W
T
F
S
30
85°
66°
31
90°
65°
1
88°
62°
2
86°
65°
3
90°
67°
4
84°
65°
5
84°
64°
6
81°
64°
7
80°
67°
8
80°
62°
9
76°
57°
10
80°
63°
11
84°
60°
12
74°
55°
13
68°
54°
14
68°
53°
15
67°
52°
16
71°
56°
17
72°
54°
18
69°
54°
19
67°
51°
20
70°
50°
21
66°
53°
22
71°
56°
23
71°
56°
24
73°
55°
25
69°
54°
26
70°
55°
27
71°
56°
28
71°
55°
29
69°
54°
30
68°
52°
1
59°
46°
2
57°
41°
3
57°
40°
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 57° to 84°, with overnight lows between 40° and 67°. The average high for September is 70° with an average low of 54°. 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.