S
M
T
W
T
F
S
28
62°
48°
29
63°
50°
30
66°
53°
1
62°
49°
2
69°
51°
3
81°
54°
4
81°
51°
5
86°
51°
6
91°
54°
7
85°
56°
8
74°
49°
9
76°
49°
10
80°
52°
11
77°
53°
12
78°
52°
13
83°
55°
14
86°
56°
15
89°
59°
16
80°
53°
17
75°
51°
18
80°
54°
19
85°
57°
20
85°
56°
21
86°
58°
22
82°
58°
23
83°
57°
24
78°
58°
25
78°
57°
26
82°
58°
27
84°
57°
28
87°
58°
29
85°
55°
30
86°
58°
31
88°
59°
1
86°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Roslyn
Roslyn's July 2026 forecast shows daily high temperatures ranging from 74° to 91°, with overnight lows between 49° and 59°. The average high for July is 83° with an average low of 55°. 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 Roslyn. See also: August | September | October.