S
M
T
W
T
F
S
26
81°
60°
27
82°
66°
28
80°
72°
29
82°
68°
30
77°
68°
31
82°
67°
1
84°
70°
2
83°
74°
3
82°
70°
4
83°
64°
5
83°
64°
6
86°
76°
7
89°
73°
8
89°
73°
9
91°
74°
10
85°
70°
11
86°
69°
12
87°
69°
13
87°
72°
14
85°
64°
15
80°
65°
16
80°
69°
17
84°
65°
18
82°
66°
19
81°
67°
20
82°
67°
21
82°
66°
22
80°
64°
23
81°
65°
24
80°
63°
25
79°
66°
26
81°
68°
27
83°
69°
28
84°
68°
29
82°
62°
30
75°
61°
31
75°
61°
1
76°
63°
2
75°
63°
3
75°
62°
4
74°
66°
5
74°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Syosset
Syosset's August 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 61° and 72°. The average high for August is 80° with an average low of 66°. 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 Syosset. See also: September | October | November.
