S
M
T
W
T
F
S
30
69°
50°
31
70°
51°
1
71°
56°
2
74°
59°
3
71°
60°
4
79°
58°
5
81°
54°
6
75°
51°
7
69°
47°
8
70°
51°
9
73°
48°
10
74°
53°
11
73°
51°
12
69°
54°
13
72°
56°
14
77°
54°
15
74°
52°
16
67°
53°
17
66°
54°
18
68°
51°
19
72°
49°
20
65°
51°
21
70°
43°
22
66°
42°
23
64°
42°
24
63°
43°
25
65°
43°
26
64°
42°
27
62°
47°
28
62°
44°
29
61°
40°
30
61°
47°
1
62°
42°
2
68°
40°
3
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alexandria
Alexandria's September 2026 forecast shows daily high temperatures ranging from 61° to 81°, with overnight lows between 38° and 60°. The average high for September is 69° with an average low of 49°. 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 Alexandria. See also: October | November | December.