S
M
T
W
T
F
S
26
55°
32°
27
64°
31°
28
63°
31°
29
55°
32°
30
54°
38°
1
60°
32°
2
54°
42°
3
58°
31°
4
61°
30°
5
62°
52°
6
62°
54°
7
63°
35°
8
61°
32°
9
62°
44°
10
66°
43°
11
59°
35°
12
61°
37°
13
62°
49°
14
65°
50°
15
67°
44°
16
70°
39°
17
82°
55°
18
80°
53°
19
74°
61°
20
82°
62°
21
68°
52°
22
65°
49°
23
56°
50°
24
56°
50°
25
68°
54°
26
76°
52°
27
74°
55°
28
76°
48°
29
74°
47°
30
58°
46°
31
71°
56°
1
67°
46°
2
68°
52°
3
71°
55°
4
74°
56°
5
81°
61°
6
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Riverhead Town
Riverhead Town's May 2026 forecast shows daily high temperatures ranging from 58° to 81°, with overnight lows between 46° and 61°. The average high for May is 71° with an average low of 54°. 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 Riverhead Town. See also: June | July | August.
