S
M
T
W
T
F
S
30
85°
62°
31
83°
56°
1
80°
55°
2
77°
56°
3
76°
55°
4
77°
55°
5
76°
56°
6
75°
54°
7
75°
54°
8
76°
55°
9
75°
56°
10
73°
53°
11
75°
53°
12
76°
55°
13
74°
54°
14
76°
53°
15
72°
52°
16
72°
51°
17
70°
50°
18
71°
51°
19
Hist. Avg.
70°
48°
20
Hist. Avg.
70°
48°
21
Hist. Avg.
70°
47°
22
Hist. Avg.
69°
47°
23
Hist. Avg.
69°
47°
24
Hist. Avg.
69°
46°
25
Hist. Avg.
68°
46°
26
Hist. Avg.
68°
46°
27
Hist. Avg.
68°
45°
28
Hist. Avg.
67°
45°
29
Hist. Avg.
67°
45°
30
Hist. Avg.
67°
44°
1
Hist. Avg.
66°
44°
2
Hist. Avg.
66°
43°
3
Hist. Avg.
65°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ansonia
Ansonia's September 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 50° and 62°. The average high for September is 76° 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 Ansonia. See also: October | November | December.
