S
M
T
W
T
F
S
30
79°
56°
31
76°
61°
1
82°
64°
2
68°
63°
3
85°
66°
4
84°
62°
5
80°
56°
6
76°
53°
7
79°
48°
8
81°
56°
9
82°
69°
10
85°
58°
11
77°
49°
12
79°
60°
13
79°
61°
14
78°
58°
15
80°
62°
16
76°
57°
17
76°
55°
18
71°
53°
19
69°
49°
20
72°
49°
21
71°
43°
22
68°
55°
23
68°
54°
24
69°
54°
25
71°
53°
26
74°
51°
27
68°
48°
28
70°
51°
29
74°
53°
30
75°
53°
1
74°
52°
2
73°
53°
3
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wappingers Falls
Wappingers Falls's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 43° and 69°. The average high for September is 74° 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 Wappingers Falls. See also: October | November | December.