S
M
T
W
T
F
S
26
70°
41°
27
72°
39°
28
68°
45°
29
68°
52°
30
64°
45°
1
72°
39°
2
77°
43°
3
77°
48°
4
72°
48°
5
64°
46°
6
59°
46°
7
63°
45°
8
70°
45°
9
73°
48°
10
72°
48°
11
61°
45°
12
55°
37°
13
61°
37°
14
54°
41°
15
52°
39°
16
52°
39°
17
63°
37°
18
57°
41°
19
64°
41°
20
68°
54°
21
73°
48°
22
79°
48°
23
82°
50°
24
86°
54°
25
90°
61°
26
91°
62°
27
86°
60°
28
83°
59°
29
85°
59°
30
86°
61°
31
75°
59°
1
75°
59°
2
76°
58°
3
74°
57°
4
72°
57°
5
70°
55°
6
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Au
Au's May 2026 forecast shows daily high temperatures ranging from 70° to 91°, with overnight lows between 55° and 62°. The average high for May is 79° with an average low of 59°. 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 Au. See also: June | July | August.