S
M
T
W
T
F
S
30
79°
65°
31
77°
61°
1
77°
61°
2
78°
62°
3
77°
66°
4
77°
65°
5
79°
62°
6
80°
62°
7
81°
63°
8
82°
63°
9
82°
62°
10
83°
66°
11
83°
65°
12
82°
66°
13
83°
65°
14
80°
65°
15
77°
64°
16
73°
59°
17
73°
56°
18
72°
55°
19
79°
62°
20
78°
57°
21
72°
54°
22
71°
54°
23
77°
57°
24
80°
61°
25
80°
61°
26
79°
60°
27
77°
61°
28
74°
59°
29
72°
60°
30
71°
57°
1
70°
56°
2
69°
52°
3
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Liberty State Park
Liberty State Park's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 46° and 66°. The average high for September is 77° with an average low of 60°. 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 State Park. See also: October | November | December.
