S
M
T
W
T
F
S
30
85°
60°
31
85°
70°
1
93°
71°
2
79°
72°
3
91°
72°
4
88°
66°
5
82°
62°
6
78°
62°
7
79°
63°
8
81°
62°
9
82°
67°
10
88°
66°
11
79°
64°
12
79°
60°
13
80°
61°
14
79°
60°
15
76°
64°
16
76°
63°
17
75°
57°
18
73°
55°
19
73°
55°
20
74°
58°
21
77°
61°
22
80°
62°
23
81°
63°
24
81°
61°
25
78°
58°
26
78°
59°
27
79°
60°
28
78°
60°
29
79°
59°
30
73°
55°
1
69°
53°
2
71°
57°
3
76°
58°
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 69° to 91°, with overnight lows between 53° and 72°. The average high for September is 79° with an average low of 61°. 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.