S
M
T
W
T
F
S
30
91°
66°
31
92°
67°
1
93°
69°
2
95°
70°
3
95°
70°
4
92°
65°
5
91°
63°
6
88°
63°
7
89°
64°
8
90°
63°
9
89°
63°
10
84°
58°
11
84°
58°
12
84°
62°
13
84°
62°
14
80°
62°
15
79°
61°
16
75°
61°
17
77°
60°
18
80°
60°
19
82°
61°
20
82°
60°
21
81°
60°
22
81°
59°
23
82°
59°
24
82°
58°
25
81°
59°
26
81°
58°
27
80°
59°
28
80°
58°
29
81°
57°
30
81°
57°
1
80°
56°
2
79°
56°
3
80°
55°
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 75° to 95°, with overnight lows between 55° and 70°. The average high for September is 84° with an average low of 61°. 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.
