S
M
T
W
T
F
S
26
88°
74°
27
90°
75°
28
88°
77°
29
81°
62°
30
70°
60°
1
63°
52°
2
76°
50°
3
81°
52°
4
84°
59°
5
86°
70°
6
79°
62°
7
69°
59°
8
81°
61°
9
93°
69°
10
93°
67°
11
79°
63°
12
85°
65°
13
87°
65°
14
87°
67°
15
85°
71°
16
86°
70°
17
85°
69°
18
83°
68°
19
84°
71°
20
84°
69°
21
86°
72°
22
89°
65°
23
82°
68°
24
83°
69°
25
83°
69°
26
84°
68°
27
84°
70°
28
85°
70°
29
85°
69°
30
86°
70°
31
87°
71°
1
87°
71°
2
86°
70°
3
86°
71°
4
87°
71°
5
86°
70°
6
89°
70°
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 79° to 93°, with overnight lows between 63° and 72°. The average high for May is 86° with an average low of 69°. 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.