S
M
T
W
T
F
S
28
96°
73°
29
94°
71°
30
95°
72°
1
95°
71°
2
94°
70°
3
95°
70°
4
92°
69°
5
91°
70°
6
91°
69°
7
90°
68°
8
86°
69°
9
85°
70°
10
91°
71°
11
91°
71°
12
90°
70°
13
85°
71°
14
86°
70°
15
87°
71°
16
88°
71°
17
87°
70°
18
87°
71°
19
88°
71°
20
87°
70°
21
87°
71°
22
91°
71°
23
90°
72°
24
91°
72°
25
92°
71°
26
90°
72°
27
91°
72°
28
92°
71°
29
92°
73°
30
91°
73°
31
92°
72°
1
89°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grayson Valley
Grayson Valley's July 2026 forecast shows daily high temperatures ranging from 85° to 96°, with overnight lows between 68° and 73°. The average high for July is 90° with an average low of 71°. 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 Grayson Valley. See also: August | September | October.