S
M
T
W
T
F
S
28
77°
55°
29
82°
61°
30
86°
66°
1
88°
70°
2
88°
70°
3
86°
72°
4
N/A
5
76°
63°
6
76°
63°
7
77°
61°
8
80°
62°
9
81°
61°
10
77°
59°
11
77°
56°
12
78°
55°
13
79°
58°
14
77°
57°
15
78°
60°
16
80°
59°
17
79°
55°
18
75°
56°
19
78°
59°
20
74°
52°
21
73°
52°
22
73°
51°
23
74°
53°
24
75°
57°
25
76°
58°
26
75°
58°
27
75°
57°
28
78°
59°
29
80°
59°
30
75°
58°
31
76°
59°
1
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Great Valley
Great Valley's July 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 51° and 63°. The average high for July 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 July weather will actually feel in Great Valley. See also: August | September | October.
