S
M
T
W
T
F
S
30
91°
72°
31
90°
71°
1
86°
71°
2
87°
70°
3
90°
71°
4
90°
71°
5
89°
70°
6
90°
71°
7
89°
70°
8
85°
66°
9
85°
65°
10
86°
65°
11
85°
66°
12
88°
65°
13
89°
69°
14
88°
65°
15
86°
64°
16
84°
63°
17
83°
64°
18
85°
65°
19
87°
64°
20
88°
64°
21
88°
66°
22
87°
66°
23
88°
62°
24
83°
61°
25
84°
60°
26
82°
61°
27
86°
65°
28
86°
64°
29
85°
64°
30
87°
61°
1
84°
63°
2
85°
64°
3
85°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Southport
Southport's September 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 60° and 72°. The average high for September is 87° with an average low of 66°. 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 Southport. See also: October | November | December.
