S
M
T
W
T
F
S
30
92°
69°
31
91°
70°
1
91°
67°
2
90°
67°
3
90°
69°
4
89°
65°
5
90°
69°
6
91°
67°
7
90°
68°
8
89°
67°
9
89°
68°
10
90°
68°
11
89°
66°
12
87°
67°
13
84°
66°
14
84°
66°
15
85°
65°
16
86°
66°
17
83°
65°
18
83°
62°
19
84°
64°
20
83°
59°
21
81°
59°
22
82°
60°
23
83°
62°
24
84°
63°
25
85°
64°
26
84°
63°
27
85°
63°
28
80°
60°
29
81°
57°
30
84°
60°
1
80°
56°
2
79°
56°
3
Hist. Avg.
85°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Liberty
Liberty's September 2026 forecast shows daily high temperatures ranging from 79° to 92°, with overnight lows between 56° and 70°. The average high for September is 86° with an average low of 64°. 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 Liberty. See also: October | November | December.