S
M
T
W
T
F
S
30
86°
74°
31
89°
75°
1
89°
76°
2
90°
78°
3
90°
78°
4
92°
78°
5
92°
74°
6
86°
69°
7
86°
70°
8
87°
71°
9
88°
70°
10
90°
72°
11
90°
72°
12
88°
70°
13
86°
68°
14
87°
67°
15
89°
70°
16
88°
70°
17
86°
69°
18
85°
69°
19
83°
66°
20
82°
68°
21
83°
68°
22
83°
67°
23
85°
68°
24
86°
68°
25
84°
67°
26
80°
68°
27
82°
67°
28
81°
67°
29
79°
66°
30
80°
66°
1
79°
65°
2
80°
65°
3
84°
64°
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 79° to 92°, with overnight lows between 64° and 78°. The average high for September is 85° with an average low of 69°. 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.
