S
M
T
W
T
F
S
28
93°
79°
29
95°
79°
30
93°
77°
1
95°
77°
2
95°
75°
3
95°
73°
4
95°
75°
5
97°
75°
6
95°
77°
7
95°
77°
8
97°
75°
9
97°
77°
10
93°
77°
11
90°
75°
12
91°
75°
13
91°
75°
14
79°
73°
15
82°
72°
16
93°
77°
17
93°
79°
18
95°
77°
19
95°
75°
20
95°
75°
21
97°
77°
22
100°
81°
23
93°
77°
24
95°
77°
25
95°
75°
26
95°
75°
27
95°
77°
28
N/A
29
97°
77°
30
99°
78°
31
97°
78°
1
100°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Katy
Katy's July 2026 forecast shows daily high temperatures ranging from 97° to 100°, with overnight lows between 77° and 80°. The average high for July is 98° with an average low of 78°. 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 Katy. See also: August | September | October.
