S
M
T
W
T
F
S
30
73°
53°
31
74°
59°
1
79°
60°
2
72°
60°
3
80°
59°
4
80°
52°
5
77°
56°
6
74°
50°
7
72°
52°
8
77°
57°
9
78°
57°
10
78°
56°
11
73°
50°
12
71°
56°
13
75°
53°
14
77°
49°
15
69°
55°
16
68°
53°
17
67°
54°
18
68°
49°
19
74°
46°
20
67°
53°
21
71°
47°
22
69°
51°
23
71°
48°
24
74°
50°
25
73°
52°
26
73°
52°
27
72°
53°
28
73°
51°
29
72°
44°
30
65°
48°
1
71°
52°
2
72°
46°
3
70°
42°
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 65° to 80°, with overnight lows between 42° and 60°. The average high for September is 73° with an average low of 52°. 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.