S
M
T
W
T
F
S
26
70°
54°
27
70°
48°
28
63°
48°
29
75°
54°
30
70°
46°
1
66°
43°
2
64°
41°
3
68°
32°
4
77°
36°
5
77°
45°
6
70°
59°
7
72°
45°
8
70°
37°
9
77°
43°
10
82°
46°
11
61°
50°
12
72°
46°
13
75°
43°
14
64°
43°
15
75°
37°
16
84°
45°
17
88°
55°
18
90°
57°
19
90°
59°
20
91°
55°
21
82°
61°
22
63°
54°
23
55°
54°
24
64°
54°
25
81°
63°
26
82°
64°
27
81°
68°
28
86°
63°
29
81°
54°
30
84°
53°
31
73°
58°
1
78°
58°
2
71°
52°
3
74°
51°
4
78°
58°
5
84°
60°
6
85°
62°
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 71° to 85°, with overnight lows between 51° and 62°. The average high for May is 78° with an average low of 57°. 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.