S
M
T
W
T
F
S
30
83°
60°
31
87°
67°
1
83°
70°
2
91°
69°
3
91°
69°
4
79°
67°
5
79°
60°
6
78°
56°
7
79°
54°
8
83°
57°
9
87°
67°
10
81°
69°
11
80°
62°
12
74°
61°
13
83°
65°
14
72°
52°
15
82°
50°
16
87°
69°
17
84°
66°
18
79°
55°
19
79°
66°
20
72°
61°
21
74°
59°
22
74°
60°
23
73°
58°
24
72°
52°
25
69°
48°
26
70°
49°
27
70°
51°
28
71°
47°
29
74°
52°
30
74°
53°
1
72°
53°
2
74°
51°
3
72°
50°
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 69° to 87°, with overnight lows between 47° and 69°. The average high for September is 74° with an average low of 56°. 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.
