S
M
T
W
T
F
S
30
85°
53°
31
75°
52°
1
75°
54°
2
78°
59°
3
74°
52°
4
74°
60°
5
79°
59°
6
81°
52°
7
77°
51°
8
74°
51°
9
73°
50°
10
72°
57°
11
75°
50°
12
72°
50°
13
71°
49°
14
73°
56°
15
76°
55°
16
75°
47°
17
77°
46°
18
68°
45°
19
67°
47°
20
67°
47°
21
68°
48°
22
65°
46°
23
66°
51°
24
69°
52°
25
70°
51°
26
73°
52°
27
72°
48°
28
71°
42°
29
64°
42°
30
64°
50°
1
63°
51°
2
67°
50°
3
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alplaus
Alplaus's September 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 42° and 60°. The average high for September is 72° 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 Alplaus. See also: October | November | December.
