S
M
T
W
T
F
S
26
90°
73°
27
89°
73°
28
84°
67°
29
85°
65°
30
81°
64°
31
71°
61°
1
80°
61°
2
82°
59°
3
81°
61°
4
70°
62°
5
74°
55°
6
78°
51°
7
74°
64°
8
80°
64°
9
81°
65°
10
81°
64°
11
79°
62°
12
80°
60°
13
76°
57°
14
75°
59°
15
74°
58°
16
76°
55°
17
79°
58°
18
79°
60°
19
77°
62°
20
79°
57°
21
81°
65°
22
84°
64°
23
83°
64°
24
82°
63°
25
78°
62°
26
73°
60°
27
72°
59°
28
78°
61°
29
81°
60°
30
82°
62°
31
82°
62°
1
81°
61°
2
82°
62°
3
83°
63°
4
83°
62°
5
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Austin
Austin's August 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 55° and 65°. The average high for August is 79° with an average low of 61°. 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 Austin. See also: September | October | November.