S
M
T
W
T
F
S
26
90°
67°
27
90°
74°
28
89°
72°
29
74°
62°
30
68°
58°
1
69°
54°
2
81°
52°
3
82°
60°
4
83°
67°
5
83°
67°
6
70°
56°
7
72°
50°
8
75°
55°
9
81°
62°
10
81°
61°
11
82°
56°
12
81°
59°
13
84°
59°
14
88°
63°
15
85°
64°
16
81°
60°
17
76°
63°
18
77°
64°
19
80°
65°
20
81°
65°
21
83°
58°
22
77°
57°
23
78°
58°
24
78°
61°
25
77°
59°
26
78°
58°
27
79°
59°
28
80°
60°
29
79°
65°
30
80°
67°
31
79°
68°
1
82°
67°
2
83°
66°
3
84°
68°
4
85°
69°
5
82°
69°
6
82°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jacks Isle
Jacks Isle's May 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 50° and 69°. The average high for May is 80° with an average low of 62°. 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 Jacks Isle. See also: June | July | August.