S
M
T
W
T
F
S
30
83°
53°
31
84°
50°
1
85°
48°
2
82°
47°
3
79°
48°
4
82°
49°
5
82°
52°
6
85°
54°
7
87°
50°
8
81°
48°
9
80°
47°
10
80°
49°
11
81°
54°
12
85°
45°
13
81°
49°
14
80°
53°
15
87°
54°
16
88°
49°
17
87°
45°
18
76°
46°
19
78°
45°
20
83°
49°
21
83°
51°
22
84°
51°
23
82°
50°
24
82°
50°
25
74°
48°
26
77°
49°
27
81°
48°
28
80°
48°
29
79°
49°
30
81°
49°
1
81°
42°
2
70°
38°
3
70°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westminster Hills
Westminster Hills's September 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 37° and 54°. The average high for September is 81° with an average low of 48°. 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 Westminster Hills. See also: October | November | December.