S
M
T
W
T
F
S
28
89°
64°
29
88°
65°
30
86°
65°
1
87°
64°
2
88°
66°
3
91°
68°
4
91°
71°
5
92°
70°
6
91°
69°
7
87°
69°
8
87°
70°
9
88°
68°
10
87°
68°
11
87°
71°
12
88°
71°
13
87°
70°
14
90°
72°
15
90°
71°
16
89°
71°
17
87°
70°
18
86°
70°
19
87°
67°
20
90°
66°
21
92°
70°
22
90°
71°
23
91°
70°
24
88°
72°
25
90°
71°
26
Hist. Avg.
90°
70°
27
Hist. Avg.
90°
70°
28
Hist. Avg.
90°
70°
29
Hist. Avg.
90°
70°
30
Hist. Avg.
90°
70°
31
Hist. Avg.
90°
70°
1
Hist. Avg.
90°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Grayson
Grayson's July 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 64° and 72°. The average high for July is 89° with an average low of 69°. 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.