S
M
T
W
T
F
S
30
82°
48°
31
80°
44°
1
81°
54°
2
72°
41°
3
81°
38°
4
82°
40°
5
81°
38°
6
80°
50°
7
77°
36°
8
84°
39°
9
86°
39°
10
88°
48°
11
87°
47°
12
90°
46°
13
87°
40°
14
74°
30°
15
81°
37°
16
82°
43°
17
80°
50°
18
74°
38°
19
73°
38°
20
80°
44°
21
81°
51°
22
74°
43°
23
81°
45°
24
82°
38°
25
82°
34°
26
80°
37°
27
77°
32°
28
73°
33°
29
72°
32°
30
68°
30°
1
64°
31°
2
71°
28°
3
73°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alpha
Alpha's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 28° and 51°. The average high for September is 75° with an average low of 37°. 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 Alpha. See also: October | November | December.
