S
M
T
W
T
F
S
30
80°
60°
31
80°
60°
1
79°
56°
2
73°
52°
3
72°
52°
4
72°
51°
5
73°
51°
6
76°
57°
7
79°
58°
8
78°
58°
9
76°
57°
10
79°
57°
11
79°
56°
12
80°
57°
13
79°
58°
14
79°
48°
15
71°
48°
16
68°
47°
17
71°
48°
18
69°
46°
19
68°
45°
20
69°
46°
21
75°
48°
22
75°
52°
23
74°
44°
24
75°
43°
25
68°
43°
26
68°
45°
27
70°
50°
28
72°
50°
29
72°
41°
30
66°
41°
1
64°
48°
2
65°
47°
3
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Edison
Edison's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 41° and 60°. The average high for September is 73° with an average low of 51°. 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 Edison. See also: October | November | December.