S
M
T
W
T
F
S
30
78°
60°
31
78°
60°
1
77°
56°
2
70°
52°
3
69°
52°
4
69°
53°
5
70°
51°
6
74°
58°
7
77°
58°
8
76°
57°
9
73°
58°
10
76°
58°
11
76°
57°
12
77°
58°
13
77°
59°
14
76°
48°
15
68°
48°
16
65°
49°
17
68°
48°
18
75°
54°
19
76°
55°
20
76°
55°
21
74°
49°
22
73°
44°
23
65°
46°
24
63°
51°
25
66°
52°
26
69°
52°
27
71°
51°
28
71°
51°
29
70°
50°
30
71°
51°
1
71°
50°
2
70°
44°
3
68°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Netcong
Netcong's September 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 41° and 60°. The average high for September is 72° with an average low of 52°. 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 Netcong. See also: October | November | December.