S
M
T
W
T
F
S
26
99°
78°
27
100°
78°
28
99°
77°
29
99°
78°
30
98°
78°
31
100°
77°
1
99°
78°
2
100°
77°
3
98°
71°
4
94°
72°
5
97°
75°
6
98°
73°
7
101°
79°
8
100°
75°
9
100°
74°
10
94°
78°
11
100°
78°
12
100°
75°
13
99°
73°
14
93°
74°
15
95°
78°
16
97°
77°
17
98°
73°
18
95°
72°
19
92°
77°
20
95°
77°
21
93°
76°
22
97°
76°
23
98°
74°
24
96°
72°
25
95°
73°
26
94°
72°
27
93°
71°
28
90°
72°
29
90°
74°
30
93°
74°
31
90°
71°
1
90°
69°
2
89°
69°
3
90°
71°
4
92°
71°
5
93°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Coppell
Coppell's August 2026 forecast shows daily high temperatures ranging from 89° to 101°, with overnight lows between 69° and 79°. The average high for August is 96° with an average low of 74°. 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 Coppell. See also: September | October | November.