S
M
T
W
T
F
S
26
84°
58°
27
87°
67°
28
83°
67°
29
83°
67°
30
80°
65°
31
87°
68°
1
90°
68°
2
87°
70°
3
82°
70°
4
83°
65°
5
83°
67°
6
85°
68°
7
87°
67°
8
86°
66°
9
87°
67°
10
87°
65°
11
84°
65°
12
85°
64°
13
82°
67°
14
87°
64°
15
82°
61°
16
80°
60°
17
80°
64°
18
81°
62°
19
80°
61°
20
79°
60°
21
80°
66°
22
85°
65°
23
80°
60°
24
79°
59°
25
80°
60°
26
79°
60°
27
78°
59°
28
79°
59°
29
78°
60°
30
80°
63°
31
85°
66°
1
85°
66°
2
83°
65°
3
78°
61°
4
77°
57°
5
76°
57°
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 76° to 90°, with overnight lows between 57° and 70°. The average high for August is 82° with an average low of 64°. 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.