S
M
T
W
T
F
S
30
80°
61°
31
79°
69°
1
78°
67°
2
74°
65°
3
88°
69°
4
85°
73°
5
80°
68°
6
73°
61°
7
79°
57°
8
80°
61°
9
80°
63°
10
87°
72°
11
79°
62°
12
N/A
13
80°
67°
14
76°
55°
15
71°
61°
16
77°
66°
17
80°
66°
18
76°
63°
19
74°
61°
20
71°
60°
21
70°
57°
22
68°
58°
23
68°
58°
24
69°
56°
25
71°
57°
26
72°
56°
27
67°
60°
28
74°
60°
29
74°
57°
30
67°
55°
1
66°
54°
2
68°
58°
3
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Old Bethpage
Old Bethpage's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 54° and 67°. The average high for September is 72° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Old Bethpage. See also: October | November | December.
