S
M
T
W
T
F
S
26
54°
40°
27
56°
37°
28
57°
36°
29
60°
40°
30
60°
39°
1
64°
34°
2
72°
40°
3
74°
50°
4
68°
50°
5
65°
43°
6
66°
38°
7
80°
50°
8
82°
45°
9
82°
40°
10
88°
48°
11
90°
48°
12
90°
50°
13
89°
52°
14
86°
54°
15
86°
52°
16
86°
50°
17
84°
49°
18
80°
48°
19
74°
39°
20
70°
44°
21
68°
39°
22
68°
38°
23
69°
38°
24
69°
37°
25
71°
39°
26
79°
45°
27
80°
46°
28
79°
45°
29
79°
46°
30
81°
46°
31
82°
47°
1
82°
47°
2
83°
48°
3
83°
49°
4
79°
48°
5
73°
48°
6
74°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Austin
Austin's May 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 37° and 54°. The average high for May is 79° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Austin. See also: June | July | August.
