S
M
T
W
T
F
S
30
76°
52°
31
74°
51°
1
72°
58°
2
72°
51°
3
73°
48°
4
70°
58°
5
72°
60°
6
77°
53°
7
78°
52°
8
71°
49°
9
68°
51°
10
70°
54°
11
70°
53°
12
67°
55°
13
75°
54°
14
Hist. Avg.
70°
50°
15
Hist. Avg.
70°
50°
16
Hist. Avg.
69°
49°
17
Hist. Avg.
69°
49°
18
Hist. Avg.
69°
49°
19
Hist. Avg.
68°
48°
20
Hist. Avg.
68°
48°
21
Hist. Avg.
68°
47°
22
Hist. Avg.
67°
47°
23
Hist. Avg.
67°
47°
24
Hist. Avg.
66°
46°
25
Hist. Avg.
66°
46°
26
Hist. Avg.
66°
46°
27
Hist. Avg.
65°
45°
28
Hist. Avg.
65°
45°
29
Hist. Avg.
64°
44°
30
Hist. Avg.
64°
44°
1
Hist. Avg.
64°
44°
2
Hist. Avg.
63°
43°
3
Hist. Avg.
63°
43°
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 67° to 78°, with overnight lows between 48° and 60°. The average high for September is 72° with an average low of 53°. 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.
