S
M
T
W
T
F
S
26
85°
64°
27
83°
68°
28
79°
69°
29
80°
69°
30
74°
66°
31
85°
67°
1
87°
73°
2
83°
73°
3
83°
73°
4
85°
72°
5
84°
73°
6
84°
73°
7
87°
74°
8
88°
73°
9
87°
72°
10
87°
71°
11
83°
70°
12
81°
67°
13
82°
66°
14
80°
68°
15
81°
66°
16
79°
65°
17
85°
68°
18
84°
66°
19
82°
72°
20
84°
69°
21
82°
65°
22
81°
69°
23
86°
72°
24
87°
73°
25
86°
72°
26
85°
71°
27
78°
71°
28
79°
72°
29
83°
70°
30
84°
71°
31
84°
70°
1
83°
66°
2
76°
63°
3
75°
63°
4
76°
64°
5
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Roosevelt Island
Roosevelt Island's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 62° and 74°. The average high for August is 83° 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 August weather will actually feel in Roosevelt Island. See also: September | October | November.
