S
M
T
W
T
F
S
31
44°
35°
1
36°
34°
2
45°
32°
3
60°
32°
4
67°
43°
5
56°
29°
6
58°
26°
7
53°
38°
8
65°
38°
9
67°
38°
10
56°
36°
11
61°
38°
12
50°
37°
13
53°
39°
14
54°
41°
15
52°
42°
16
54°
44°
17
50°
43°
18
51°
43°
19
57°
44°
20
65°
45°
21
66°
43°
22
64°
44°
23
64°
47°
24
62°
46°
25
62°
45°
26
68°
48°
27
67°
46°
28
64°
47°
29
65°
47°
30
65°
45°
1
66°
46°
2
65°
46°
3
65°
45°
4
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Riverhead
Riverhead's June 2026 forecast shows daily high temperatures ranging from 50° to 68°, with overnight lows between 41° and 48°. The average high for June is 62° 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 June weather will actually feel in Riverhead. See also: July | August | September.
