S
M
T
W
T
F
S
30
70°
51°
31
67°
49°
1
69°
48°
2
68°
47°
3
68°
54°
4
70°
51°
5
67°
47°
6
66°
46°
7
67°
54°
8
70°
52°
9
66°
50°
10
64°
46°
11
64°
43°
12
64°
44°
13
68°
52°
14
63°
49°
15
62°
48°
16
Hist. Avg.
66°
46°
17
Hist. Avg.
65°
46°
18
Hist. Avg.
65°
46°
19
Hist. Avg.
64°
45°
20
Hist. Avg.
64°
45°
21
Hist. Avg.
63°
45°
22
Hist. Avg.
63°
44°
23
Hist. Avg.
62°
44°
24
Hist. Avg.
62°
44°
25
Hist. Avg.
61°
43°
26
Hist. Avg.
61°
43°
27
Hist. Avg.
60°
42°
28
Hist. Avg.
60°
42°
29
Hist. Avg.
59°
42°
30
Hist. Avg.
59°
41°
1
Hist. Avg.
58°
41°
2
Hist. Avg.
58°
41°
3
Hist. Avg.
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in St. Agatha
St. Agatha's September 2026 forecast shows daily high temperatures ranging from 62° to 70°, with overnight lows between 43° and 54°. The average high for September is 67° with an average low of 49°. 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. Agatha. See also: October | November | December.
