S
M
T
W
T
F
S
30
86°
73°
31
86°
73°
1
87°
71°
2
80°
67°
3
79°
66°
4
79°
67°
5
80°
65°
6
82°
70°
7
85°
71°
8
85°
71°
9
84°
70°
10
86°
72°
11
86°
71°
12
86°
72°
13
87°
72°
14
85°
65°
15
78°
62°
16
76°
61°
17
77°
62°
18
84°
67°
19
85°
68°
20
84°
68°
21
83°
64°
22
82°
58°
23
74°
62°
24
73°
65°
25
73°
65°
26
80°
64°
27
81°
65°
28
80°
65°
29
79°
64°
30
78°
64°
1
78°
63°
2
79°
57°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in The Downs
The Downs's September 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 53° and 73°. The average high for September is 81° with an average low of 66°. 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 The Downs. See also: October | November | December.