S
M
T
W
T
F
S
30
86°
66°
31
86°
65°
1
85°
67°
2
85°
65°
3
88°
69°
4
89°
65°
5
89°
68°
6
88°
66°
7
86°
68°
8
87°
68°
9
88°
66°
10
83°
66°
11
87°
65°
12
87°
67°
13
86°
65°
14
86°
65°
15
85°
66°
16
86°
66°
17
86°
64°
18
85°
63°
19
84°
63°
20
84°
58°
21
80°
62°
22
79°
63°
23
84°
62°
24
84°
61°
25
83°
60°
26
83°
61°
27
82°
60°
28
82°
61°
29
81°
60°
30
82°
58°
1
80°
59°
2
82°
59°
3
82°
60°
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 79° to 89°, with overnight lows between 58° and 69°. The average high for September is 85° with an average low of 64°. 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.