S
M
T
W
T
F
S
26
86°
61°
27
89°
64°
28
79°
68°
29
84°
64°
30
73°
58°
1
66°
55°
2
73°
50°
3
75°
42°
4
82°
48°
5
79°
57°
6
83°
58°
7
73°
56°
8
71°
52°
9
76°
60°
10
83°
59°
11
79°
62°
12
83°
54°
13
85°
55°
14
79°
53°
15
84°
50°
16
85°
62°
17
88°
64°
18
88°
70°
19
91°
68°
20
84°
69°
21
83°
69°
22
86°
65°
23
80°
66°
24
83°
65°
25
85°
67°
26
85°
65°
27
86°
66°
28
85°
64°
29
84°
66°
30
86°
62°
31
88°
65°
1
89°
67°
2
90°
67°
3
87°
66°
4
84°
63°
5
85°
64°
6
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Melborne
Melborne's May 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 62° and 70°. The average high for May is 86° with an average low of 66°. 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 Melborne. See also: June | July | August.