S
M
T
W
T
F
S
26
84°
66°
27
86°
67°
28
87°
67°
29
86°
68°
30
87°
67°
31
87°
68°
1
86°
68°
2
87°
67°
3
86°
66°
4
85°
65°
5
86°
68°
6
88°
66°
7
79°
63°
8
81°
66°
9
85°
66°
10
84°
67°
11
86°
67°
12
86°
66°
13
83°
66°
14
84°
65°
15
85°
65°
16
85°
66°
17
83°
64°
18
86°
64°
19
86°
62°
20
84°
63°
21
85°
58°
22
78°
53°
23
77°
53°
24
77°
55°
25
79°
56°
26
78°
59°
27
79°
60°
28
80°
61°
29
82°
62°
30
82°
61°
31
81°
61°
1
83°
56°
2
80°
51°
3
71°
59°
4
72°
60°
5
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Roslyn
Roslyn's August 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 51° and 68°. The average high for August is 83° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Roslyn. See also: September | October | November.
