S
M
T
W
T
F
S
26
88°
67°
27
89°
67°
28
89°
68°
29
90°
68°
30
92°
69°
31
92°
70°
1
90°
71°
2
90°
71°
3
91°
70°
4
90°
70°
5
92°
68°
6
92°
66°
7
88°
67°
8
88°
68°
9
89°
68°
10
89°
69°
11
90°
69°
12
92°
68°
13
90°
70°
14
89°
69°
15
88°
69°
16
88°
66°
17
89°
68°
18
88°
67°
19
88°
68°
20
89°
70°
21
87°
71°
22
90°
70°
23
92°
68°
24
92°
70°
25
93°
71°
26
93°
70°
27
92°
70°
28
92°
71°
29
91°
70°
30
92°
68°
31
90°
67°
1
89°
66°
2
88°
67°
3
89°
66°
4
89°
69°
5
91°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Collierville
Collierville's August 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 66° and 71°. The average high for August is 90° 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 August weather will actually feel in Collierville. See also: September | October | November.