S
M
T
W
T
F
S
30
65°
48°
31
68°
51°
1
71°
50°
2
68°
50°
3
71°
51°
4
71°
52°
5
69°
50°
6
67°
52°
7
70°
51°
8
62°
51°
9
67°
52°
10
66°
51°
11
66°
52°
12
67°
51°
13
66°
51°
14
67°
50°
15
73°
53°
16
71°
52°
17
72°
51°
18
72°
54°
19
70°
54°
20
69°
52°
21
70°
53°
22
74°
54°
23
68°
51°
24
69°
52°
25
70°
53°
26
69°
53°
27
74°
48°
28
75°
48°
29
69°
47°
30
70°
53°
1
73°
54°
2
76°
55°
3
70°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blacktown Westpoint
Blacktown Westpoint's September 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 47° and 56°. The average high for September is 70° with an average low of 52°. 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 Blacktown Westpoint. See also: October | November | December.