S
M
T
W
T
F
S
26
94°
75°
27
95°
73°
28
95°
76°
29
89°
74°
30
88°
70°
31
88°
67°
1
81°
71°
2
76°
69°
3
86°
66°
4
87°
63°
5
90°
66°
6
91°
67°
7
93°
72°
8
89°
71°
9
89°
69°
10
93°
73°
11
93°
72°
12
95°
75°
13
96°
76°
14
96°
76°
15
97°
72°
16
99°
72°
17
95°
75°
18
90°
68°
19
87°
67°
20
94°
71°
21
93°
67°
22
96°
65°
23
90°
64°
24
89°
66°
25
89°
67°
26
90°
70°
27
91°
66°
28
89°
65°
29
91°
68°
30
93°
70°
31
92°
65°
1
92°
65°
2
88°
63°
3
88°
62°
4
89°
63°
5
90°
66°
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 88° to 93°, with overnight lows between 62° and 70°. The average high for August is 90° with an average low of 66°. 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.