S
M
T
W
T
F
S
30
70°
55°
31
71°
55°
1
65°
54°
2
67°
56°
3
73°
55°
4
66°
55°
5
66°
54°
6
70°
55°
7
69°
56°
8
67°
55°
9
72°
56°
10
70°
53°
11
65°
52°
12
66°
54°
13
67°
56°
14
73°
57°
15
74°
56°
16
74°
56°
17
68°
57°
18
73°
57°
19
74°
58°
20
74°
57°
21
71°
58°
22
74°
59°
23
76°
58°
24
75°
58°
25
75°
57°
26
69°
56°
27
70°
54°
28
69°
52°
29
70°
53°
30
69°
53°
1
69°
54°
2
70°
60°
3
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chatswood
Chatswood's September 2026 forecast shows daily high temperatures ranging from 65° to 76°, with overnight lows between 52° and 60°. The average high for September is 70° with an average low of 56°. 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 Chatswood. See also: October | November | December.
