S
M
T
W
T
F
S
30
81°
67°
31
79°
68°
1
86°
71°
2
82°
69°
3
83°
63°
4
79°
61°
5
76°
60°
6
77°
60°
7
79°
61°
8
78°
61°
9
79°
63°
10
80°
58°
11
80°
57°
12
73°
55°
13
75°
54°
14
78°
56°
15
72°
55°
16
72°
60°
17
74°
53°
18
71°
51°
19
70°
50°
20
71°
53°
21
75°
58°
22
78°
59°
23
79°
58°
24
78°
56°
25
76°
54°
26
76°
55°
27
77°
57°
28
76°
56°
29
77°
53°
30
69°
49°
1
66°
47°
2
68°
52°
3
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Piermont
Piermont's September 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 47° and 71°. The average high for September is 76° with an average low of 58°. 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 Piermont. See also: October | November | December.
