S
M
T
W
T
F
S
26
87°
64°
27
87°
68°
28
80°
68°
29
83°
64°
30
85°
64°
31
87°
65°
1
88°
67°
2
85°
64°
3
84°
63°
4
88°
66°
5
88°
66°
6
89°
65°
7
86°
68°
8
85°
67°
9
87°
68°
10
87°
67°
11
81°
62°
12
82°
63°
13
83°
67°
14
83°
68°
15
85°
67°
16
86°
67°
17
81°
66°
18
82°
65°
19
82°
65°
20
84°
66°
21
85°
66°
22
84°
65°
23
82°
64°
24
84°
65°
25
86°
66°
26
87°
67°
27
86°
66°
28
85°
64°
29
83°
63°
30
82°
62°
31
84°
63°
1
85°
64°
2
85°
64°
3
84°
60°
4
78°
60°
5
79°
63°
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 78° to 89°, with overnight lows between 60° and 68°. The average high for August is 84° with an average low of 65°. 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.