S
M
T
W
T
F
S
26
71°
37°
27
57°
39°
28
58°
45°
29
72°
40°
30
81°
44°
1
73°
45°
2
77°
50°
3
89°
50°
4
75°
51°
5
65°
49°
6
65°
53°
7
68°
49°
8
67°
46°
9
78°
44°
10
70°
52°
11
79°
49°
12
83°
49°
13
64°
48°
14
63°
46°
15
55°
40°
16
58°
38°
17
65°
36°
18
71°
44°
19
N/A
20
70°
49°
21
82°
51°
22
82°
51°
23
76°
47°
24
72°
51°
25
60°
44°
26
63°
47°
27
69°
49°
28
67°
46°
29
67°
45°
30
69°
46°
31
70°
47°
1
74°
50°
2
69°
49°
3
65°
44°
4
68°
51°
5
64°
49°
6
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Deer Island
Deer Island's May 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 44° and 51°. The average high for May is 70° with an average low of 48°. 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 Deer Island. See also: June | July | August.
