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
75°
60°
18
75°
60°
19
77°
57°
20
79°
60°
21
85°
48°
22
84°
64°
23
83°
64°
24
80°
63°
25
80°
62°
26
82°
63°
27
82°
62°
28
80°
58°
29
73°
57°
30
72°
54°
31
72°
56°
1
73°
60°
2
75°
61°
3
79°
61°
4
78°
60°
5
76°
60°
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 85°, with overnight lows between 48° and 65°. The average high for August is 78° with an average low of 60°. 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.