S
M
T
W
T
F
S
26
81°
66°
27
82°
69°
28
85°
72°
29
86°
73°
30
87°
72°
31
88°
67°
1
86°
72°
2
86°
72°
3
81°
71°
4
84°
68°
5
85°
72°
6
87°
72°
7
88°
70°
8
86°
66°
9
82°
66°
10
80°
70°
11
82°
67°
12
80°
66°
13
79°
66°
14
80°
65°
15
79°
66°
16
81°
65°
17
80°
67°
18
82°
69°
19
86°
69°
20
85°
66°
21
79°
71°
22
85°
70°
23
Hist. Avg.
82°
67°
24
Hist. Avg.
81°
67°
25
Hist. Avg.
81°
67°
26
Hist. Avg.
81°
67°
27
Hist. Avg.
81°
66°
28
Hist. Avg.
81°
66°
29
Hist. Avg.
81°
66°
30
Hist. Avg.
80°
66°
31
Hist. Avg.
80°
66°
1
Hist. Avg.
80°
65°
2
Hist. Avg.
80°
65°
3
Hist. Avg.
80°
65°
4
Hist. Avg.
79°
65°
5
Hist. Avg.
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Valley Stream
Valley Stream's August 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 65° and 73°. 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 Valley Stream. See also: September | October | November.