S
M
T
W
T
F
S
26
56°
40°
27
65°
41°
28
63°
43°
29
60°
47°
30
60°
47°
1
62°
44°
2
61°
50°
3
59°
44°
4
65°
48°
5
67°
52°
6
60°
56°
7
64°
46°
8
64°
46°
9
61°
49°
10
67°
51°
11
60°
47°
12
64°
46°
13
67°
51°
14
N/A
15
66°
53°
16
74°
60°
17
83°
61°
18
73°
61°
19
85°
66°
20
84°
57°
21
68°
52°
22
67°
53°
23
67°
54°
24
72°
56°
25
73°
57°
26
75°
59°
27
78°
53°
28
69°
51°
29
68°
54°
30
69°
59°
31
76°
56°
1
70°
55°
2
70°
54°
3
71°
53°
4
70°
53°
5
71°
60°
6
76°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Muttontown
Muttontown's May 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 51° and 66°. The average high for May is 73° with an average low of 56°. 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 Muttontown. See also: June | July | August.