S
M
T
W
T
F
S
30
73°
47°
31
87°
58°
1
71°
58°
2
62°
52°
3
63°
50°
4
68°
52°
5
74°
53°
6
74°
54°
7
71°
54°
8
72°
55°
9
75°
56°
10
76°
57°
11
75°
56°
12
74°
56°
13
74°
54°
14
73°
53°
15
71°
52°
16
68°
52°
17
68°
51°
18
69°
48°
19
67°
53°
20
67°
49°
21
66°
47°
22
66°
47°
23
65°
46°
24
65°
46°
25
66°
47°
26
66°
46°
27
70°
54°
28
64°
52°
29
64°
46°
30
71°
51°
1
64°
51°
2
62°
48°
3
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ridgefield
Ridgefield's September 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 46° and 58°. The average high for September is 69° with an average low of 51°. 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 Ridgefield. See also: October | November | December.