S
M
T
W
T
F
S
30
87°
67°
31
89°
68°
1
89°
70°
2
90°
68°
3
90°
71°
4
89°
71°
5
91°
67°
6
86°
69°
7
87°
70°
8
86°
70°
9
85°
68°
10
87°
68°
11
88°
69°
12
88°
69°
13
87°
68°
14
88°
69°
15
88°
69°
16
87°
68°
17
88°
68°
18
87°
67°
19
87°
65°
20
86°
63°
21
86°
65°
22
85°
66°
23
86°
65°
24
86°
62°
25
85°
59°
26
83°
64°
27
84°
65°
28
84°
62°
29
82°
63°
30
83°
64°
1
82°
63°
2
84°
63°
3
78°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Windy Hills
Windy Hills's September 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 59° and 71°. The average high for September is 86° 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 Windy Hills. See also: October | November | December.