S
M
T
W
T
F
S
30
75°
60°
31
77°
59°
1
78°
57°
2
73°
54°
3
73°
54°
4
74°
57°
5
74°
56°
6
75°
59°
7
76°
55°
8
74°
54°
9
74°
52°
10
73°
53°
11
74°
54°
12
74°
56°
13
76°
55°
14
75°
54°
15
76°
59°
16
75°
60°
17
72°
59°
18
72°
59°
19
73°
58°
20
72°
59°
21
73°
59°
22
76°
58°
23
75°
60°
24
77°
59°
25
79°
59°
26
79°
57°
27
78°
56°
28
77°
56°
29
76°
57°
30
76°
58°
1
77°
59°
2
79°
58°
3
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sea Cliff
Sea Cliff's September 2026 forecast shows daily high temperatures ranging from 72° to 79°, with overnight lows between 52° and 60°. The average high for September is 75° 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 Sea Cliff. See also: October | November | December.
