S
M
T
W
T
F
S
30
80°
64°
31
81°
65°
1
86°
60°
2
80°
59°
3
80°
60°
4
81°
58°
5
80°
58°
6
81°
61°
7
83°
59°
8
81°
64°
9
84°
63°
10
80°
63°
11
82°
62°
12
84°
63°
13
84°
63°
14
83°
62°
15
84°
62°
16
83°
60°
17
82°
61°
18
76°
62°
19
81°
61°
20
82°
61°
21
81°
59°
22
81°
53°
23
78°
53°
24
Hist. Avg.
75°
54°
25
Hist. Avg.
74°
53°
26
Hist. Avg.
74°
53°
27
Hist. Avg.
74°
53°
28
Hist. Avg.
73°
52°
29
Hist. Avg.
73°
52°
30
Hist. Avg.
72°
52°
1
Hist. Avg.
72°
51°
2
Hist. Avg.
72°
51°
3
Hist. Avg.
71°
50°
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 76° to 86°, with overnight lows between 53° and 65°. The average high for September is 82° with an average low of 61°. 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.
