S
M
T
W
T
F
S
26
92°
70°
27
90°
71°
28
85°
68°
29
91°
71°
30
91°
72°
31
92°
71°
1
86°
70°
2
86°
71°
3
85°
61°
4
84°
65°
5
85°
65°
6
88°
63°
7
86°
62°
8
85°
63°
9
85°
66°
10
86°
67°
11
88°
64°
12
84°
61°
13
84°
62°
14
83°
62°
15
83°
67°
16
84°
61°
17
83°
60°
18
82°
60°
19
82°
61°
20
83°
65°
21
84°
68°
22
89°
68°
23
89°
67°
24
90°
65°
25
89°
65°
26
87°
63°
27
82°
62°
28
81°
61°
29
84°
58°
30
81°
58°
31
81°
59°
1
80°
61°
2
80°
62°
3
82°
63°
4
82°
55°
5
83°
55°
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 80° to 92°, with overnight lows between 55° and 72°. The average high for August is 85° 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.