S
M
T
W
T
F
S
30
75°
54°
31
77°
59°
1
80°
60°
2
75°
60°
3
83°
59°
4
83°
54°
5
78°
54°
6
76°
50°
7
74°
53°
8
81°
57°
9
81°
57°
10
80°
56°
11
74°
49°
12
73°
53°
13
76°
55°
14
79°
49°
15
71°
53°
16
70°
54°
17
69°
51°
18
70°
49°
19
76°
45°
20
70°
51°
21
74°
47°
22
73°
52°
23
75°
48°
24
76°
49°
25
75°
52°
26
76°
52°
27
74°
53°
28
74°
51°
29
73°
46°
30
68°
48°
1
73°
52°
2
74°
48°
3
73°
43°
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 68° to 83°, with overnight lows between 43° and 60°. The average high for September is 75° with an average low of 52°. 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.
