S
M
T
W
T
F
S
30
81°
68°
31
88°
73°
1
93°
72°
2
94°
71°
3
91°
68°
4
89°
69°
5
87°
67°
6
81°
64°
7
79°
60°
8
74°
61°
9
76°
59°
10
76°
60°
11
72°
54°
12
73°
53°
13
73°
54°
14
77°
52°
15
78°
58°
16
79°
57°
17
78°
57°
18
78°
56°
19
77°
58°
20
79°
57°
21
78°
57°
22
78°
56°
23
77°
56°
24
78°
55°
25
77°
54°
26
78°
55°
27
77°
54°
28
77°
54°
29
76°
53°
30
76°
53°
1
75°
52°
2
75°
52°
3
74°
51°
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 72° to 94°, with overnight lows between 51° and 72°. The average high for September is 79° with an average low of 58°. 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.
