S
M
T
W
T
F
S
30
82°
64°
31
84°
67°
1
88°
67°
2
88°
66°
3
87°
66°
4
87°
59°
5
81°
60°
6
81°
61°
7
84°
65°
8
84°
64°
9
86°
65°
10
80°
64°
11
86°
65°
12
86°
65°
13
85°
64°
14
85°
64°
15
86°
63°
16
85°
64°
17
85°
64°
18
84°
57°
19
83°
57°
20
80°
54°
21
76°
53°
22
76°
59°
23
78°
57°
24
81°
53°
25
75°
52°
26
75°
54°
27
74°
53°
28
78°
57°
29
80°
58°
30
80°
58°
1
78°
58°
2
78°
57°
3
73°
57°
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 73° to 88°, with overnight lows between 52° and 67°. The average high for September is 82° with an average low of 60°. 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.