S
M
T
W
T
F
S
30
77°
59°
31
82°
65°
1
83°
66°
2
81°
64°
3
77°
60°
4
76°
57°
5
75°
56°
6
75°
56°
7
76°
63°
8
82°
56°
9
74°
55°
10
74°
55°
11
76°
51°
12
72°
54°
13
72°
53°
14
70°
52°
15
72°
53°
16
73°
54°
17
72°
52°
18
74°
52°
19
72°
51°
20
71°
50°
21
70°
50°
22
70°
51°
23
72°
54°
24
75°
50°
25
76°
54°
26
75°
56°
27
69°
52°
28
68°
51°
29
74°
49°
30
72°
47°
1
67°
50°
2
71°
56°
3
73°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yonkers
Yonkers's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 45° and 66°. The average high for September is 74° 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 Yonkers. See also: October | November | December.