S
M
T
W
T
F
S
30
82°
62°
31
82°
62°
1
81°
57°
2
75°
54°
3
74°
55°
4
74°
53°
5
75°
53°
6
78°
60°
7
81°
60°
8
79°
59°
9
76°
59°
10
80°
60°
11
81°
59°
12
80°
59°
13
81°
60°
14
81°
49°
15
72°
50°
16
69°
50°
17
72°
49°
18
79°
55°
19
80°
57°
20
81°
56°
21
78°
50°
22
77°
45°
23
68°
46°
24
67°
48°
25
69°
54°
26
71°
54°
27
74°
53°
28
73°
53°
29
75°
51°
30
75°
52°
1
74°
52°
2
73°
45°
3
72°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poughkeepsie
Poughkeepsie's September 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 42° and 62°. The average high for September is 76° 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 Poughkeepsie. See also: October | November | December.
