S
M
T
W
T
F
S
26
85°
72°
27
85°
72°
28
84°
71°
29
81°
72°
30
80°
71°
31
85°
72°
1
85°
71°
2
84°
72°
3
85°
70°
4
86°
71°
5
84°
71°
6
81°
70°
7
80°
69°
8
81°
65°
9
80°
65°
10
80°
66°
11
79°
70°
12
83°
70°
13
85°
69°
14
84°
64°
15
79°
64°
16
79°
66°
17
81°
70°
18
78°
64°
19
81°
64°
20
81°
65°
21
82°
64°
22
83°
64°
23
82°
63°
24
82°
62°
25
80°
62°
26
81°
67°
27
82°
68°
28
77°
67°
29
82°
69°
30
83°
67°
31
82°
60°
1
79°
59°
2
75°
61°
3
75°
60°
4
76°
60°
5
75°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Old Bethpage
Old Bethpage's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 59° and 72°. The average high for August is 81° 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 Old Bethpage. See also: September | October | November.