S
M
T
W
T
F
S
26
78°
63°
27
80°
62°
28
82°
63°
29
81°
63°
30
82°
64°
31
81°
63°
1
79°
62°
2
75°
62°
3
75°
61°
4
76°
62°
5
77°
63°
6
78°
62°
7
81°
63°
8
81°
63°
9
80°
64°
10
81°
63°
11
81°
63°
12
80°
62°
13
81°
64°
14
84°
62°
15
84°
61°
16
79°
61°
17
80°
62°
18
82°
61°
19
81°
56°
20
80°
52°
21
72°
51°
22
71°
52°
23
72°
54°
24
74°
53°
25
73°
51°
26
71°
56°
27
71°
53°
28
72°
50°
29
70°
50°
30
71°
49°
31
70°
49°
1
69°
51°
2
70°
51°
3
70°
53°
4
69°
52°
5
70°
51°
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 69° to 84°, with overnight lows between 49° and 64°. The average high for August is 77° with an average low of 58°. 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.