S
M
T
W
T
F
S
30
70°
52°
31
71°
51°
1
71°
50°
2
72°
50°
3
71°
56°
4
71°
53°
5
75°
49°
6
70°
48°
7
69°
51°
8
70°
54°
9
69°
54°
10
73°
53°
11
72°
50°
12
66°
50°
13
69°
55°
14
74°
54°
15
Hist. Avg.
71°
52°
16
Hist. Avg.
70°
52°
17
Hist. Avg.
70°
52°
18
Hist. Avg.
69°
51°
19
Hist. Avg.
69°
51°
20
Hist. Avg.
68°
50°
21
Hist. Avg.
68°
50°
22
Hist. Avg.
68°
50°
23
Hist. Avg.
67°
49°
24
Hist. Avg.
67°
49°
25
Hist. Avg.
66°
48°
26
Hist. Avg.
66°
48°
27
Hist. Avg.
66°
48°
28
Hist. Avg.
65°
47°
29
Hist. Avg.
65°
47°
30
Hist. Avg.
64°
46°
1
Hist. Avg.
64°
46°
2
Hist. Avg.
63°
46°
3
Hist. Avg.
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Casco
South Casco's September 2026 forecast shows daily high temperatures ranging from 66° to 75°, with overnight lows between 48° and 56°. The average high for September is 71° with an average low of 52°. 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 South Casco. See also: October | November | December.
