S
M
T
W
T
F
S
26
97°
78°
27
98°
78°
28
97°
79°
29
99°
79°
30
99°
78°
31
98°
79°
1
99°
79°
2
99°
80°
3
100°
80°
4
100°
79°
5
99°
80°
6
100°
79°
7
99°
79°
8
98°
80°
9
99°
80°
10
98°
77°
11
98°
77°
12
97°
75°
13
96°
76°
14
98°
77°
15
97°
76°
16
97°
77°
17
96°
77°
18
98°
71°
19
98°
70°
20
91°
69°
21
91°
69°
22
92°
70°
23
91°
70°
24
92°
71°
25
93°
70°
26
94°
70°
27
93°
71°
28
95°
70°
29
91°
71°
30
96°
71°
31
96°
70°
1
95°
74°
2
96°
71°
3
94°
72°
4
89°
71°
5
93°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rowlett
Rowlett's August 2026 forecast shows daily high temperatures ranging from 89° to 100°, with overnight lows between 69° and 80°. The average high for August is 96° with an average low of 75°. 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 Rowlett. See also: September | October | November.