S
M
T
W
T
F
S
26
44°
33°
27
43°
31°
28
53°
28°
29
58°
32°
30
60°
34°
1
63°
36°
2
68°
39°
3
68°
38°
4
54°
35°
5
52°
33°
6
69°
35°
7
73°
42°
8
71°
42°
9
69°
40°
10
75°
39°
11
78°
39°
12
74°
39°
13
70°
41°
14
71°
39°
15
65°
43°
16
69°
49°
17
71°
50°
18
71°
46°
19
67°
46°
20
71°
49°
21
72°
50°
22
72°
50°
23
71°
49°
24
72°
50°
25
73°
51°
26
74°
52°
27
74°
51°
28
71°
50°
29
63°
46°
30
63°
45°
31
64°
44°
1
66°
47°
2
73°
50°
3
73°
52°
4
75°
53°
5
76°
53°
6
76°
52°
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 52° to 78°, with overnight lows between 33° and 53°. The average high for May is 70° with an average low of 45°. 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.