S
M
T
W
T
F
S
31
70°
31°
1
65°
37°
2
77°
35°
3
80°
43°
4
76°
43°
5
88°
46°
6
78°
52°
7
85°
61°
8
72°
55°
9
75°
43°
10
72°
61°
11
90°
63°
12
91°
67°
13
87°
59°
14
84°
56°
15
78°
61°
16
74°
50°
17
74°
52°
18
81°
64°
19
80°
59°
20
82°
53°
21
80°
50°
22
72°
51°
23
73°
61°
24
83°
59°
25
81°
51°
26
77°
65°
27
78°
66°
28
78°
63°
29
84°
57°
30
82°
58°
1
82°
68°
2
92°
72°
3
98°
75°
4
98°
69°
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 92° to 98°, with overnight lows between 69° and 75°. The average high for June is 96° with an average low of 72°. 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.