S
M
T
W
T
F
S
30
90°
68°
31
91°
67°
1
93°
67°
2
95°
69°
3
96°
71°
4
95°
71°
5
96°
71°
6
95°
71°
7
83°
68°
8
89°
67°
9
90°
64°
10
93°
62°
11
91°
64°
12
89°
70°
13
90°
65°
14
91°
64°
15
94°
67°
16
90°
70°
17
92°
65°
18
95°
64°
19
94°
69°
20
91°
65°
21
90°
67°
22
88°
67°
23
82°
67°
24
N/A
25
80°
59°
26
82°
52°
27
82°
48°
28
N/A
29
85°
48°
30
88°
51°
1
88°
57°
2
87°
63°
3
79°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Trenton
Trenton's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Trenton. See also: October | November | December.
