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
77°
59°
13
79°
70°
14
75°
61°
15
70°
54°
16
75°
57°
17
80°
68°
18
81°
68°
19
69°
62°
20
69°
64°
21
69°
60°
22
66°
54°
23
67°
54°
24
67°
53°
25
69°
58°
26
68°
56°
27
71°
56°
28
72°
57°
29
71°
59°
30
73°
58°
1
75°
59°
2
72°
55°
3
68°
59°
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 66° to 75°, with overnight lows between 53° and 59°. The average high for September is 70° with an average low of 57°. 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.
