S
M
T
W
T
F
S
26
76°
56°
27
77°
55°
28
74°
57°
29
75°
54°
30
74°
57°
31
77°
56°
1
78°
56°
2
79°
57°
3
77°
53°
4
78°
51°
5
72°
50°
6
72°
56°
7
75°
57°
8
79°
51°
9
76°
51°
10
75°
56°
11
79°
49°
12
74°
48°
13
70°
54°
14
73°
57°
15
78°
49°
16
77°
48°
17
70°
48°
18
69°
49°
19
70°
48°
20
73°
48°
21
70°
47°
22
67°
51°
23
75°
52°
24
74°
47°
25
71°
45°
26
67°
44°
27
65°
45°
28
66°
46°
29
65°
45°
30
67°
52°
31
72°
53°
1
74°
53°
2
73°
50°
3
72°
44°
4
69°
47°
5
71°
42°
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 65° to 79°, with overnight lows between 42° and 57°. The average high for August is 73° with an average low of 51°. 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.
