S
M
T
W
T
F
S
30
87°
54°
31
86°
53°
1
86°
54°
2
88°
55°
3
90°
56°
4
91°
57°
5
91°
57°
6
92°
56°
7
92°
57°
8
91°
57°
9
91°
56°
10
84°
56°
11
84°
57°
12
89°
58°
13
90°
57°
14
91°
57°
15
90°
56°
16
89°
55°
17
87°
56°
18
88°
56°
19
89°
56°
20
Hist. Avg.
86°
53°
21
Hist. Avg.
86°
53°
22
Hist. Avg.
86°
53°
23
Hist. Avg.
85°
53°
24
Hist. Avg.
85°
53°
25
Hist. Avg.
85°
53°
26
Hist. Avg.
85°
53°
27
Hist. Avg.
84°
52°
28
Hist. Avg.
84°
52°
29
Hist. Avg.
84°
52°
30
Hist. Avg.
84°
52°
1
Hist. Avg.
83°
52°
2
Hist. Avg.
83°
52°
3
Hist. Avg.
83°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Deer Park
Deer Park's September 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 53° and 58°. The average high for September is 89° with an average low of 56°. 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 Deer Park. See also: October | November | December.
