S
M
T
W
T
F
S
30
61°
48°
31
64°
50°
1
68°
55°
2
64°
52°
3
62°
48°
4
60°
46°
5
64°
54°
6
68°
52°
7
55°
52°
8
60°
47°
9
61°
46°
10
60°
44°
11
63°
41°
12
72°
52°
13
72°
61°
14
75°
57°
15
62°
45°
16
62°
51°
17
64°
51°
18
72°
57°
19
76°
56°
20
72°
54°
21
69°
51°
22
64°
52°
23
63°
49°
24
64°
52°
25
65°
54°
26
70°
53°
27
71°
56°
28
68°
54°
29
67°
56°
30
65°
49°
1
65°
54°
2
66°
54°
3
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cockatoo
Cockatoo's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 41° and 61°. The average high for September is 67° 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 Cockatoo. See also: October | November | December.