S
M
T
W
T
F
S
30
98°
74°
31
100°
74°
1
96°
78°
2
95°
78°
3
90°
76°
4
95°
75°
5
95°
76°
6
98°
74°
7
99°
75°
8
98°
76°
9
96°
75°
10
97°
74°
11
95°
74°
12
94°
73°
13
96°
75°
14
91°
68°
15
92°
72°
16
94°
71°
17
94°
71°
18
93°
70°
19
93°
71°
20
92°
71°
21
90°
70°
22
84°
70°
23
84°
69°
24
85°
69°
25
87°
68°
26
88°
68°
27
91°
69°
28
91°
68°
29
90°
67°
30
91°
68°
1
90°
68°
2
90°
67°
3
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Park
Park's September 2026 forecast shows daily high temperatures ranging from 84° to 99°, with overnight lows between 67° and 78°. The average high for September is 92° with an average low of 72°. 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 Park. See also: October | November | December.