S
M
T
W
T
F
S
30
73°
59°
31
72°
55°
1
70°
54°
2
68°
59°
3
77°
64°
4
68°
55°
5
72°
52°
6
79°
55°
7
73°
61°
8
63°
54°
9
64°
48°
10
64°
50°
11
70°
55°
12
70°
52°
13
N/A
14
71°
63°
15
72°
51°
16
67°
55°
17
67°
51°
18
66°
61°
19
69°
57°
20
67°
57°
21
66°
55°
22
67°
56°
23
67°
57°
24
66°
57°
25
67°
55°
26
65°
54°
27
64°
53°
28
64°
53°
29
63°
52°
30
65°
51°
1
64°
49°
2
64°
52°
3
65°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Selsey
Selsey's September 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 49° and 63°. The average high for September is 66° with an average low of 55°. 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 Selsey. See also: October | November | December.