S
M
T
W
T
F
S
26
92°
75°
27
89°
75°
28
91°
74°
29
93°
75°
30
93°
75°
31
91°
74°
1
88°
75°
2
88°
74°
3
89°
74°
4
91°
73°
5
92°
74°
6
92°
75°
7
90°
72°
8
92°
72°
9
92°
72°
10
91°
70°
11
90°
69°
12
93°
71°
13
93°
73°
14
92°
72°
15
92°
73°
16
93°
73°
17
91°
72°
18
90°
73°
19
91°
72°
20
91°
72°
21
88°
71°
22
86°
70°
23
89°
72°
24
92°
71°
25
93°
72°
26
92°
72°
27
91°
71°
28
89°
69°
29
89°
71°
30
90°
70°
31
87°
71°
1
86°
70°
2
86°
66°
3
85°
65°
4
85°
65°
5
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mountain Brook
Mountain Brook's August 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 65° and 75°. The average high for August is 90° with an average low of 72°. 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 Mountain Brook. See also: September | October | November.
