S
M
T
W
T
F
S
30
68°
45°
31
67°
45°
1
69°
49°
2
69°
54°
3
70°
54°
4
77°
55°
5
77°
52°
6
74°
45°
7
70°
44°
8
68°
44°
9
68°
43°
10
66°
43°
11
67°
44°
12
65°
43°
13
70°
49°
14
73°
50°
15
70°
49°
16
65°
47°
17
66°
48°
18
65°
47°
19
68°
40°
20
65°
43°
21
66°
40°
22
69°
39°
23
63°
39°
24
62°
40°
25
62°
45°
26
63°
38°
27
62°
44°
28
62°
44°
29
60°
36°
30
60°
38°
1
61°
44°
2
66°
39°
3
63°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lexington
Lexington's September 2026 forecast shows daily high temperatures ranging from 60° to 77°, with overnight lows between 36° and 55°. The average high for September is 67° with an average low of 44°. 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 Lexington. See also: October | November | December.