S
M
T
W
T
F
S
26
83°
71°
27
88°
76°
28
88°
63°
29
83°
61°
30
84°
64°
31
83°
65°
1
81°
64°
2
82°
63°
3
85°
64°
4
87°
64°
5
89°
66°
6
90°
65°
7
88°
65°
8
84°
64°
9
87°
67°
10
88°
67°
11
84°
67°
12
85°
66°
13
87°
67°
14
83°
64°
15
84°
66°
16
86°
67°
17
83°
67°
18
85°
66°
19
85°
67°
20
84°
66°
21
85°
64°
22
84°
66°
23
89°
67°
24
90°
66°
25
86°
65°
26
90°
68°
27
91°
68°
28
91°
67°
29
90°
67°
30
88°
65°
31
83°
62°
1
81°
57°
2
80°
59°
3
83°
64°
4
86°
64°
5
88°
65°
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 80° to 91°, with overnight lows between 57° and 76°. The average high for August is 86° with an average low of 65°. 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.