S
M
T
W
T
F
S
30
85°
60°
31
85°
70°
1
93°
71°
2
79°
72°
3
89°
74°
4
89°
69°
5
82°
65°
6
78°
60°
7
79°
63°
8
81°
64°
9
85°
70°
10
88°
66°
11
83°
61°
12
81°
61°
13
80°
62°
14
83°
63°
15
85°
62°
16
83°
59°
17
75°
57°
18
73°
55°
19
79°
58°
20
80°
61°
21
79°
61°
22
77°
62°
23
74°
61°
24
77°
58°
25
76°
58°
26
78°
61°
27
77°
60°
28
75°
55°
29
69°
52°
30
71°
55°
1
69°
53°
2
69°
54°
3
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pennsville
Pennsville's September 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 51° and 74°. The average high for September is 78° with an average low of 60°. 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 Pennsville. See also: October | November | December.