S
M
T
W
T
F
S
30
68°
53°
31
68°
50°
1
63°
47°
2
63°
47°
3
64°
49°
4
64°
48°
5
65°
52°
6
66°
48°
7
65°
51°
8
64°
53°
9
65°
52°
10
64°
53°
11
64°
53°
12
65°
52°
13
64°
48°
14
64°
47°
15
66°
48°
16
68°
52°
17
66°
48°
18
64°
48°
19
64°
50°
20
69°
51°
21
67°
52°
22
66°
54°
23
70°
53°
24
71°
54°
25
70°
55°
26
71°
53°
27
Hist. Avg.
70°
49°
28
Hist. Avg.
70°
49°
29
Hist. Avg.
70°
49°
30
Hist. Avg.
70°
49°
1
Hist. Avg.
70°
49°
2
Hist. Avg.
70°
49°
3
Hist. Avg.
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in North Perth
North Perth's September 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 47° and 55°. The average high for September is 66° with an average low of 51°. 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 North Perth. See also: October | November | December.