S
M
T
W
T
F
S
26
55°
36°
27
65°
37°
28
63°
35°
29
58°
39°
30
56°
46°
1
60°
39°
2
58°
47°
3
58°
42°
4
62°
48°
5
63°
53°
6
61°
56°
7
63°
43°
8
61°
40°
9
62°
51°
10
68°
51°
11
60°
43°
12
63°
44°
13
64°
51°
14
67°
53°
15
68°
49°
16
72°
46°
17
84°
56°
18
82°
57°
19
79°
62°
20
88°
58°
21
65°
50°
22
63°
50°
23
56°
54°
24
62°
55°
25
64°
54°
26
67°
60°
27
72°
56°
28
71°
55°
29
72°
57°
30
71°
58°
31
74°
60°
1
75°
56°
2
68°
55°
3
66°
55°
4
67°
59°
5
71°
59°
6
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mastic
Mastic's May 2026 forecast shows daily high temperatures ranging from 56° to 88°, with overnight lows between 50° and 62°. The average high for May is 70° 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 Mastic. See also: June | July | August.
