S
M
T
W
T
F
S
26
68°
52°
27
65°
43°
28
68°
40°
29
72°
35°
30
60°
31°
1
61°
27°
2
69°
32°
3
65°
34°
4
61°
32°
5
63°
27°
6
64°
30°
7
63°
49°
8
57°
41°
9
62°
47°
10
50°
40°
11
57°
37°
12
58°
50°
13
60°
40°
14
62°
32°
15
58°
32°
16
54°
26°
17
51°
25°
18
49°
26°
19
N/A
20
58°
50°
21
57°
44°
22
54°
47°
23
56°
43°
24
52°
43°
25
55°
47°
26
51°
43°
27
53°
44°
28
52°
43°
29
54°
40°
30
52°
48°
31
61°
53°
1
60°
50°
2
51°
44°
3
51°
46°
4
49°
41°
5
51°
40°
6
49°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Goat Island
Goat Island's May 2026 forecast shows daily high temperatures ranging from 49° to 61°, with overnight lows between 40° and 53°. The average high for May is 54° with an average low of 45°. 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 Goat Island. See also: June | July | August.