S
M
T
W
T
F
S
30
75°
52°
31
74°
51°
1
74°
47°
2
69°
45°
3
68°
46°
4
67°
47°
5
68°
46°
6
69°
47°
7
70°
47°
8
71°
50°
9
72°
51°
10
72°
50°
11
71°
51°
12
71°
52°
13
70°
51°
14
71°
46°
15
70°
42°
16
62°
46°
17
66°
49°
18
69°
43°
19
62°
45°
20
61°
49°
21
64°
48°
22
68°
48°
23
68°
48°
24
Hist. Avg.
62°
47°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
62°
46°
27
Hist. Avg.
61°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
61°
45°
30
Hist. Avg.
60°
45°
1
Hist. Avg.
60°
45°
2
Hist. Avg.
59°
45°
3
Hist. Avg.
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Au
Au's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 42° and 52°. The average high for September is 69° 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 Au. See also: October | November | December.
