S
M
T
W
T
F
S
30
92°
75°
31
92°
75°
1
92°
75°
2
93°
77°
3
91°
77°
4
92°
79°
5
94°
79°
6
91°
79°
7
89°
75°
8
89°
77°
9
91°
77°
10
92°
75°
11
93°
74°
12
92°
77°
13
87°
77°
14
92°
77°
15
92°
79°
16
93°
78°
17
93°
76°
18
93°
74°
19
92°
74°
20
90°
72°
21
90°
72°
22
91°
75°
23
91°
76°
24
87°
76°
25
85°
70°
26
84°
66°
27
85°
63°
28
87°
66°
29
87°
71°
30
90°
73°
1
90°
75°
2
88°
77°
3
91°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westlake
Westlake's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Westlake. See also: October | November | December.
