S
M
T
W
T
F
S
30
91°
64°
31
88°
64°
1
92°
69°
2
95°
62°
3
92°
63°
4
92°
63°
5
91°
65°
6
88°
66°
7
95°
69°
8
77°
62°
9
81°
52°
10
84°
62°
11
89°
56°
12
77°
61°
13
78°
64°
14
81°
52°
15
73°
51°
16
74°
54°
17
69°
49°
18
68°
51°
19
73°
52°
20
73°
53°
21
76°
49°
22
81°
58°
23
81°
57°
24
80°
57°
25
72°
56°
26
75°
55°
27
79°
56°
28
77°
55°
29
73°
47°
30
66°
43°
1
62°
43°
2
63°
39°
3
63°
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 62° to 89°, with overnight lows between 39° and 64°. The average high for September is 75° with an average low of 53°. 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.