S
M
T
W
T
F
S
30
78°
60°
31
78°
66°
1
78°
63°
2
69°
61°
3
83°
67°
4
82°
68°
5
78°
62°
6
73°
59°
7
77°
53°
8
78°
58°
9
81°
61°
10
84°
69°
11
77°
59°
12
75°
55°
13
77°
64°
14
73°
53°
15
69°
51°
16
78°
56°
17
81°
66°
18
79°
63°
19
68°
59°
20
67°
61°
21
70°
58°
22
67°
53°
23
68°
50°
24
66°
48°
25
67°
50°
26
61°
54°
27
62°
58°
28
62°
56°
29
68°
55°
30
75°
63°
1
75°
65°
2
82°
56°
3
71°
50°
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 71° to 82°, with overnight lows between 50° and 65°. The average high for September is 76° with an average low of 59°. 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.
