S
M
T
W
T
F
S
30
81°
63°
31
81°
62°
1
82°
57°
2
74°
54°
3
73°
56°
4
73°
54°
5
74°
53°
6
77°
60°
7
81°
61°
8
79°
60°
9
76°
60°
10
79°
59°
11
80°
59°
12
79°
60°
13
80°
61°
14
80°
50°
15
72°
50°
16
68°
51°
17
72°
50°
18
70°
48°
19
69°
49°
20
69°
49°
21
76°
51°
22
76°
55°
23
75°
47°
24
75°
46°
25
69°
45°
26
69°
47°
27
73°
53°
28
73°
52°
29
72°
44°
30
67°
44°
1
65°
47°
2
67°
48°
3
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Paltz
New Paltz's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 44° and 63°. The average high for September is 74° 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 New Paltz. See also: October | November | December.