S
M
T
W
T
F
S
26
79°
68°
27
80°
66°
28
80°
70°
29
81°
68°
30
79°
67°
31
79°
69°
1
80°
67°
2
79°
70°
3
80°
70°
4
81°
69°
5
84°
68°
6
79°
65°
7
79°
69°
8
83°
68°
9
79°
69°
10
79°
69°
11
80°
65°
12
78°
69°
13
81°
69°
14
82°
68°
15
78°
65°
16
77°
64°
17
77°
67°
18
78°
69°
19
78°
70°
20
80°
70°
21
82°
69°
22
83°
68°
23
82°
69°
24
84°
68°
25
84°
66°
26
83°
66°
27
82°
63°
28
78°
61°
29
76°
60°
30
75°
58°
31
74°
58°
1
75°
62°
2
75°
67°
3
76°
67°
4
82°
66°
5
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Islip Terrace
Islip Terrace's August 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 58° and 70°. The average high for August is 80° with an average low of 67°. 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 Islip Terrace. See also: September | October | November.
