S
M
T
W
T
F
S
28
84°
66°
29
87°
63°
30
90°
65°
1
97°
68°
2
101°
74°
3
99°
72°
4
96°
72°
5
84°
69°
6
74°
64°
7
72°
65°
8
81°
67°
9
85°
69°
10
84°
64°
11
84°
62°
12
78°
60°
13
80°
59°
14
80°
59°
15
79°
59°
16
80°
58°
17
81°
61°
18
80°
60°
19
85°
64°
20
79°
58°
21
77°
57°
22
78°
58°
23
79°
58°
24
80°
59°
25
81°
61°
26
84°
63°
27
81°
64°
28
85°
65°
29
85°
65°
30
84°
64°
31
84°
65°
1
85°
65°
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 72° to 85°, with overnight lows between 57° and 69°. The average high for July is 81° 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.