S
M
T
W
T
F
S
26
86°
56°
27
86°
64°
28
80°
63°
29
82°
63°
30
81°
66°
31
87°
61°
1
87°
62°
2
82°
71°
3
82°
58°
4
84°
64°
5
80°
70°
6
84°
69°
7
86°
66°
8
84°
66°
9
85°
65°
10
86°
64°
11
84°
62°
12
77°
60°
13
79°
59°
14
80°
60°
15
77°
59°
16
76°
55°
17
84°
60°
18
82°
56°
19
83°
62°
20
83°
58°
21
80°
55°
22
80°
60°
23
84°
62°
24
85°
63°
25
84°
62°
26
82°
61°
27
76°
61°
28
79°
60°
29
80°
59°
30
81°
60°
31
81°
60°
1
82°
55°
2
74°
52°
3
73°
52°
4
73°
53°
5
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lehigh Valley
Lehigh Valley's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 51° and 71°. The average high for August is 81° with an average low of 60°. 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 Lehigh Valley. See also: September | October | November.
