S
M
T
W
T
F
S
28
98°
61°
29
91°
57°
30
91°
58°
1
92°
57°
2
95°
58°
3
95°
61°
4
96°
64°
5
98°
63°
6
98°
61°
7
99°
61°
8
99°
62°
9
98°
61°
10
96°
64°
11
99°
65°
12
98°
66°
13
98°
65°
14
99°
66°
15
99°
65°
16
98°
65°
17
99°
64°
18
99°
65°
19
98°
65°
20
99°
63°
21
99°
62°
22
98°
61°
23
98°
64°
24
97°
65°
25
99°
64°
26
98°
64°
27
99°
62°
28
98°
63°
29
98°
61°
30
99°
62°
31
100°
63°
1
98°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grayson
Grayson's July 2026 forecast shows daily high temperatures ranging from 91° to 100°, with overnight lows between 57° and 66°. The average high for July is 98° with an average low of 63°. 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. See also: August | September | October.