S
M
T
W
T
F
S
28
80°
60°
29
84°
55°
30
79°
56°
1
80°
61°
2
83°
64°
3
86°
64°
4
85°
63°
5
84°
64°
6
87°
57°
7
83°
57°
8
84°
58°
9
85°
64°
10
86°
61°
11
84°
64°
12
86°
64°
13
87°
58°
14
81°
58°
15
81°
60°
16
83°
58°
17
82°
64°
18
86°
64°
19
87°
59°
20
86°
62°
21
85°
61°
22
80°
63°
23
79°
62°
24
80°
65°
25
80°
65°
26
83°
64°
27
83°
64°
28
85°
63°
29
87°
64°
30
88°
65°
31
87°
64°
1
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lehigh Valley
Lehigh Valley's July 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 55° and 65°. The average high for July is 84° 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 July weather will actually feel in Lehigh Valley. See also: August | September | October.