S
M
T
W
T
F
S
26
86°
68°
27
88°
68°
28
89°
67°
29
88°
68°
30
89°
69°
31
87°
67°
1
86°
70°
2
88°
69°
3
89°
70°
4
90°
68°
5
88°
67°
6
85°
68°
7
86°
69°
8
86°
68°
9
87°
68°
10
86°
67°
11
87°
69°
12
89°
69°
13
87°
68°
14
88°
69°
15
89°
69°
16
89°
68°
17
88°
66°
18
85°
67°
19
85°
68°
20
87°
68°
21
88°
67°
22
85°
65°
23
86°
66°
24
87°
65°
25
88°
64°
26
85°
68°
27
88°
63°
28
85°
62°
29
82°
63°
30
83°
63°
31
83°
64°
1
85°
64°
2
86°
66°
3
87°
65°
4
87°
65°
5
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Trenton
Trenton's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 62° and 70°. The average high for August is 87° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Trenton. See also: September | October | November.