S
M
T
W
T
F
S
26
80°
65°
27
80°
66°
28
85°
67°
29
86°
67°
30
84°
66°
31
82°
67°
1
85°
66°
2
84°
67°
3
85°
66°
4
84°
65°
5
81°
66°
6
82°
66°
7
86°
63°
8
78°
61°
9
78°
59°
10
77°
62°
11
78°
66°
12
78°
65°
13
82°
67°
14
84°
66°
15
84°
63°
16
77°
62°
17
77°
55°
18
78°
58°
19
80°
64°
20
83°
63°
21
84°
64°
22
83°
62°
23
81°
57°
24
77°
56°
25
77°
58°
26
76°
56°
27
76°
57°
28
77°
56°
29
77°
56°
30
82°
57°
31
83°
63°
1
82°
62°
2
80°
56°
3
80°
53°
4
74°
53°
5
73°
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 73° to 86°, with overnight lows between 53° and 67°. The average high for August is 80° with an average low of 62°. 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.