S
M
T
W
T
F
S
30
70°
58°
31
75°
59°
1
77°
59°
2
77°
55°
3
74°
50°
4
75°
56°
5
76°
48°
6
75°
48°
7
67°
53°
8
67°
55°
9
68°
52°
10
67°
47°
11
65°
55°
12
73°
46°
13
69°
50°
14
70°
52°
15
70°
55°
16
66°
45°
17
70°
46°
18
Hist. Avg.
70°
46°
19
Hist. Avg.
69°
46°
20
Hist. Avg.
69°
45°
21
Hist. Avg.
69°
45°
22
Hist. Avg.
69°
45°
23
Hist. Avg.
68°
44°
24
Hist. Avg.
68°
44°
25
Hist. Avg.
68°
44°
26
Hist. Avg.
67°
44°
27
Hist. Avg.
67°
43°
28
Hist. Avg.
67°
43°
29
Hist. Avg.
66°
43°
30
Hist. Avg.
66°
42°
1
Hist. Avg.
66°
42°
2
Hist. Avg.
65°
42°
3
Hist. Avg.
65°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Altona
Altona's September 2026 forecast shows daily high temperatures ranging from 65° to 77°, with overnight lows between 45° and 59°. The average high for September is 71° 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 Altona. See also: October | November | December.
