S
M
T
W
T
F
S
30
67°
44°
31
67°
43°
1
66°
47°
2
67°
45°
3
69°
43°
4
71°
45°
5
71°
44°
6
69°
50°
7
72°
46°
8
69°
50°
9
67°
51°
10
67°
46°
11
68°
45°
12
68°
50°
13
69°
50°
14
73°
49°
15
68°
48°
16
68°
47°
17
71°
49°
18
73°
52°
19
74°
53°
20
73°
52°
21
74°
54°
22
76°
51°
23
73°
49°
24
74°
49°
25
Hist. Avg.
73°
46°
26
Hist. Avg.
73°
46°
27
Hist. Avg.
73°
46°
28
Hist. Avg.
73°
47°
29
Hist. Avg.
74°
47°
30
Hist. Avg.
74°
47°
1
Hist. Avg.
74°
47°
2
Hist. Avg.
74°
47°
3
Hist. Avg.
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Blacktown Westpoint
Blacktown Westpoint's September 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 43° and 54°. The average high for September is 70° 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 Blacktown Westpoint. See also: October | November | December.