S
M
T
W
T
F
S
30
92°
75°
31
90°
77°
1
88°
78°
2
90°
78°
3
85°
78°
4
93°
76°
5
93°
77°
6
94°
76°
7
87°
75°
8
89°
75°
9
92°
77°
10
95°
77°
11
93°
76°
12
90°
75°
13
92°
75°
14
95°
78°
15
N/A
16
88°
74°
17
89°
73°
18
89°
71°
19
89°
72°
20
88°
74°
21
89°
73°
22
88°
75°
23
89°
74°
24
88°
73°
25
88°
74°
26
89°
73°
27
87°
71°
28
87°
73°
29
88°
72°
30
87°
74°
1
87°
74°
2
89°
75°
3
89°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Union Park
Union Park's September 2026 forecast shows daily high temperatures ranging from 87° to 89°, with overnight lows between 71° and 75°. The average high for September is 88° with an average low of 73°. 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 Union Park. See also: October | November | December.
