S
M
T
W
T
F
S
26
85°
72°
27
87°
74°
28
87°
73°
29
86°
74°
30
88°
75°
31
89°
75°
1
88°
74°
2
86°
72°
3
83°
68°
4
82°
70°
5
81°
68°
6
81°
68°
7
83°
72°
8
85°
71°
9
87°
73°
10
88°
73°
11
87°
72°
12
86°
73°
13
87°
72°
14
87°
72°
15
87°
73°
16
83°
73°
17
82°
72°
18
87°
73°
19
86°
72°
20
85°
66°
21
86°
64°
22
81°
64°
23
80°
66°
24
81°
67°
25
80°
65°
26
80°
71°
27
81°
65°
28
80°
64°
29
79°
64°
30
79°
63°
31
80°
62°
1
78°
64°
2
78°
64°
3
77°
65°
4
76°
64°
5
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hart Island
Hart Island's August 2026 forecast shows daily high temperatures ranging from 76° to 89°, with overnight lows between 62° and 75°. 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 Hart Island. See also: September | October | November.
