S
M
T
W
T
F
S
30
82°
65°
31
86°
65°
1
87°
66°
2
86°
65°
3
83°
62°
4
83°
62°
5
77°
56°
6
71°
53°
7
77°
58°
8
77°
56°
9
76°
59°
10
76°
58°
11
72°
51°
12
73°
52°
13
73°
52°
14
76°
55°
15
79°
57°
16
78°
57°
17
78°
56°
18
79°
58°
19
79°
58°
20
77°
57°
21
77°
56°
22
78°
57°
23
77°
56°
24
78°
54°
25
72°
51°
26
69°
49°
27
70°
48°
28
74°
51°
29
75°
52°
30
75°
52°
1
74°
51°
2
74°
52°
3
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Basking Ridge
Basking Ridge's September 2026 forecast shows daily high temperatures ranging from 69° to 87°, with overnight lows between 48° and 66°. The average high for September is 77° with an average low of 56°. 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 Basking Ridge. See also: October | November | December.