S
M
T
W
T
F
S
26
86°
68°
27
86°
66°
28
87°
68°
29
87°
67°
30
87°
67°
1
87°
66°
2
88°
70°
3
77°
70°
4
86°
68°
5
87°
72°
6
88°
69°
7
89°
70°
8
91°
77°
9
91°
72°
10
92°
73°
11
92°
75°
12
88°
75°
13
90°
75°
14
88°
77°
15
89°
74°
16
92°
70°
17
96°
73°
18
93°
73°
19
87°
73°
20
88°
72°
21
92°
72°
22
92°
74°
23
91°
73°
24
93°
72°
25
94°
74°
26
93°
75°
27
90°
73°
28
88°
72°
29
90°
73°
30
87°
72°
31
89°
73°
1
91°
73°
2
90°
72°
3
88°
72°
4
89°
78°
5
86°
74°
6
85°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Marco Island Airport
Marco Island Airport's May 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 72° and 78°. The average high for May is 90° with an average low of 73°. 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 Marco Island Airport. See also: June | July | August.
