S
M
T
W
T
F
S
30
88°
53°
31
79°
67°
1
92°
69°
2
75°
70°
3
89°
70°
4
89°
73°
5
83°
62°
6
76°
60°
7
81°
54°
8
84°
50°
9
89°
59°
10
90°
72°
11
78°
55°
12
81°
51°
13
84°
67°
14
76°
56°
15
74°
49°
16
82°
50°
17
86°
64°
18
83°
64°
19
70°
62°
20
74°
67°
21
69°
62°
22
65°
59°
23
68°
58°
24
64°
53°
25
68°
54°
26
59°
54°
27
64°
57°
28
64°
60°
29
73°
57°
30
78°
52°
1
79°
62°
2
85°
60°
3
68°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barnegat
Barnegat's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 58° and 62°. The average high for September is 77° 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 Barnegat. See also: October | November | December.