S
M
T
W
T
F
S
26
56°
28°
27
59°
31°
28
66°
36°
29
66°
44°
30
71°
31°
1
79°
38°
2
83°
51°
3
82°
41°
4
80°
39°
5
79°
44°
6
81°
46°
7
77°
44°
8
75°
36°
9
79°
38°
10
84°
35°
11
79°
41°
12
92°
36°
13
68°
44°
14
70°
36°
15
59°
36°
16
43°
32°
17
48°
31°
18
55°
34°
19
60°
39°
20
65°
37°
21
68°
34°
22
62°
34°
23
69°
39°
24
67°
39°
25
60°
35°
26
57°
35°
27
60°
37°
28
62°
34°
29
60°
39°
30
56°
34°
31
64°
41°
1
67°
41°
2
63°
40°
3
64°
39°
4
57°
33°
5
56°
32°
6
57°
31°
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 43° to 69°, with overnight lows between 31° and 41°. The average high for May is 60° with an average low of 36°. 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.