S
M
T
W
T
F
S
26
61°
53°
27
62°
52°
28
63°
52°
29
65°
52°
30
63°
52°
1
60°
53°
2
59°
53°
3
63°
53°
4
62°
54°
5
61°
52°
6
65°
55°
7
59°
52°
8
60°
52°
9
63°
52°
10
62°
52°
11
66°
52°
12
58°
51°
13
63°
53°
14
66°
52°
15
68°
54°
16
67°
54°
17
69°
61°
18
71°
53°
19
76°
55°
20
71°
54°
21
64°
53°
22
65°
55°
23
66°
53°
24
64°
54°
25
63°
53°
26
66°
52°
27
65°
51°
28
61°
50°
29
60°
49°
30
61°
49°
31
66°
51°
1
67°
52°
2
69°
55°
3
69°
53°
4
62°
50°
5
64°
53°
6
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Treasure Island
Treasure Island's May 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 49° and 61°. The average high for May is 66° with an average low of 53°. 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 Treasure Island. See also: June | July | August.
