S
M
T
W
T
F
S
30
66°
55°
31
64°
52°
1
61°
55°
2
61°
55°
3
63°
53°
4
62°
50°
5
62°
54°
6
67°
53°
7
61°
49°
8
59°
49°
9
60°
46°
10
61°
48°
11
62°
49°
12
61°
47°
13
62°
51°
14
63°
51°
15
62°
47°
16
59°
50°
17
60°
51°
18
61°
51°
19
61°
50°
20
60°
50°
21
62°
51°
22
62°
50°
23
61°
50°
24
61°
49°
25
60°
50°
26
61°
49°
27
61°
49°
28
60°
50°
29
61°
49°
30
58°
46°
1
55°
45°
2
55°
47°
3
56°
46°
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 55° to 67°, with overnight lows between 45° and 54°. The average high for September is 61° 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.