S
M
T
W
T
F
S
30
70°
54°
31
72°
60°
1
75°
61°
2
76°
61°
3
73°
59°
4
71°
58°
5
70°
55°
6
70°
55°
7
69°
58°
8
72°
57°
9
68°
54°
10
68°
50°
11
73°
47°
12
65°
46°
13
67°
49°
14
66°
48°
15
64°
46°
16
66°
45°
17
64°
46°
18
66°
50°
19
64°
46°
20
64°
46°
21
62°
45°
22
64°
50°
23
68°
46°
24
68°
44°
25
67°
51°
26
69°
51°
27
68°
50°
28
62°
45°
29
64°
47°
30
68°
41°
1
61°
48°
2
67°
50°
3
67°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Freeport
Freeport's September 2026 forecast shows daily high temperatures ranging from 61° to 76°, with overnight lows between 41° and 61°. The average high for September is 68° with an average low of 50°. 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 Freeport. See also: October | November | December.
