S
M
T
W
T
F
S
28
78°
63°
29
84°
57°
30
82°
58°
1
82°
68°
2
92°
72°
3
98°
75°
4
98°
69°
5
84°
64°
6
75°
68°
7
78°
66°
8
80°
68°
9
87°
70°
10
86°
68°
11
86°
69°
12
85°
68°
13
85°
68°
14
83°
69°
15
85°
67°
16
79°
64°
17
81°
67°
18
81°
67°
19
84°
69°
20
83°
70°
21
80°
70°
22
80°
69°
23
81°
70°
24
81°
70°
25
82°
69°
26
83°
69°
27
84°
70°
28
85°
69°
29
83°
70°
30
85°
71°
31
86°
71°
1
87°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Riverhead
Riverhead's July 2026 forecast shows daily high temperatures ranging from 75° to 98°, with overnight lows between 64° and 75°. The average high for July is 84° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Riverhead. See also: August | September | October.
