S
M
T
W
T
F
S
26
96°
76°
27
96°
76°
28
95°
75°
29
97°
77°
30
97°
77°
31
96°
76°
1
95°
76°
2
96°
77°
3
96°
77°
4
97°
76°
5
97°
77°
6
96°
77°
7
96°
76°
8
97°
77°
9
96°
75°
10
96°
74°
11
96°
75°
12
95°
72°
13
94°
75°
14
97°
74°
15
93°
73°
16
93°
72°
17
94°
72°
18
95°
73°
19
94°
71°
20
91°
70°
21
91°
70°
22
92°
71°
23
91°
71°
24
91°
72°
25
92°
71°
26
91°
70°
27
93°
70°
28
93°
71°
29
92°
73°
30
95°
72°
31
95°
73°
1
93°
72°
2
94°
70°
3
91°
71°
4
90°
72°
5
90°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Katy
Katy's August 2026 forecast shows daily high temperatures ranging from 90° to 97°, with overnight lows between 70° and 77°. The average high for August is 94° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Katy. See also: September | October | November.
