S
M
T
W
T
F
S
30
80°
54°
31
77°
64°
1
87°
68°
2
70°
66°
3
88°
67°
4
87°
68°
5
81°
62°
6
80°
58°
7
80°
52°
8
82°
51°
9
85°
56°
10
87°
67°
11
82°
55°
12
82°
50°
13
83°
64°
14
76°
49°
15
75°
52°
16
80°
63°
17
84°
64°
18
83°
56°
19
73°
60°
20
73°
60°
21
73°
60°
22
68°
52°
23
69°
50°
24
71°
52°
25
73°
52°
26
74°
51°
27
73°
50°
28
72°
49°
29
76°
51°
30
70°
47°
1
68°
50°
2
70°
52°
3
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Peapack
Peapack's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 47° and 64°. 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 Peapack. See also: October | November | December.
