S
M
T
W
T
F
S
26
89°
71°
27
90°
71°
28
89°
70°
29
88°
70°
30
88°
66°
31
81°
64°
1
81°
64°
2
82°
65°
3
84°
66°
4
84°
64°
5
83°
64°
6
85°
67°
7
86°
70°
8
84°
69°
9
83°
68°
10
86°
63°
11
85°
63°
12
86°
64°
13
84°
68°
14
85°
69°
15
88°
68°
16
88°
70°
17
88°
70°
18
88°
68°
19
86°
62°
20
83°
62°
21
81°
63°
22
81°
62°
23
82°
61°
24
81°
62°
25
83°
62°
26
86°
61°
27
85°
62°
28
81°
65°
29
81°
63°
30
79°
64°
31
84°
66°
1
85°
60°
2
83°
59°
3
78°
58°
4
79°
60°
5
78°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Perth Amboy Junction
Perth Amboy Junction's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 58° and 71°. The average high for August is 84° with an average low of 65°. 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 Perth Amboy Junction. See also: September | October | November.