S
M
T
W
T
F
S
30
82°
69°
31
78°
71°
1
80°
68°
2
74°
67°
3
88°
69°
4
86°
75°
5
80°
70°
6
77°
66°
7
79°
66°
8
80°
67°
9
84°
71°
10
87°
72°
11
80°
70°
12
79°
66°
13
82°
69°
14
78°
64°
15
73°
60°
16
79°
65°
17
83°
69°
18
82°
58°
19
72°
62°
20
70°
57°
21
69°
54°
22
64°
52°
23
67°
52°
24
71°
54°
25
70°
53°
26
70°
53°
27
72°
54°
28
73°
55°
29
71°
54°
30
73°
49°
1
68°
51°
2
74°
55°
3
66°
54°
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 64° to 83°, with overnight lows between 49° and 69°. The average high for September is 71° with an average low of 55°. 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.