S
M
T
W
T
F
S
30
75°
58°
31
73°
54°
1
73°
55°
2
74°
54°
3
73°
59°
4
73°
58°
5
75°
55°
6
76°
55°
7
76°
56°
8
78°
56°
9
78°
55°
10
79°
58°
11
79°
58°
12
78°
59°
13
79°
58°
14
76°
58°
15
73°
57°
16
69°
52°
17
69°
49°
18
68°
48°
19
75°
55°
20
74°
50°
21
68°
47°
22
66°
47°
23
73°
50°
24
76°
54°
25
76°
54°
26
75°
53°
27
72°
54°
28
71°
53°
29
68°
53°
30
67°
51°
1
66°
49°
2
65°
45°
3
64°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nyack
Nyack's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 39° and 59°. The average high for September is 73° with an average low of 53°. 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 Nyack. See also: October | November | December.
