S
M
T
W
T
F
S
26
95°
76°
27
97°
75°
28
97°
77°
29
97°
79°
30
99°
78°
31
98°
77°
1
99°
77°
2
99°
78°
3
99°
75°
4
98°
78°
5
98°
78°
6
99°
78°
7
98°
78°
8
96°
76°
9
98°
78°
10
98°
78°
11
99°
79°
12
101°
78°
13
102°
78°
14
98°
79°
15
100°
79°
16
99°
77°
17
100°
78°
18
100°
78°
19
101°
77°
20
102°
76°
21
102°
77°
22
103°
75°
23
103°
74°
24
102°
76°
25
101°
74°
26
101°
77°
27
102°
78°
28
100°
72°
29
98°
74°
30
98°
78°
31
97°
79°
1
97°
78°
2
100°
78°
3
100°
81°
4
91°
80°
5
97°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Alamo Heights
Alamo Heights's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Alamo Heights. See also: September | October | November.