S
M
T
W
T
F
S
30
84°
69°
31
83°
69°
1
82°
64°
2
76°
61°
3
75°
61°
4
75°
62°
5
76°
60°
6
80°
65°
7
82°
67°
8
82°
67°
9
78°
66°
10
81°
67°
11
82°
66°
12
83°
67°
13
82°
68°
14
81°
58°
15
74°
58°
16
72°
57°
17
74°
58°
18
72°
56°
19
73°
57°
20
72°
57°
21
78°
58°
22
78°
62°
23
77°
54°
24
78°
54°
25
73°
53°
26
71°
55°
27
74°
60°
28
75°
60°
29
76°
52°
30
72°
53°
1
68°
58°
2
69°
58°
3
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bethpage
Bethpage's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 52° and 69°. The average high for September is 77° with an average low of 60°. 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 Bethpage. See also: October | November | December.
