S
M
T
W
T
F
S
30
91°
71°
31
93°
72°
1
91°
73°
2
91°
68°
3
90°
67°
4
88°
67°
5
88°
68°
6
89°
71°
7
92°
73°
8
93°
73°
9
92°
72°
10
94°
71°
11
94°
71°
12
89°
72°
13
92°
71°
14
95°
65°
15
89°
65°
16
88°
64°
17
87°
65°
18
88°
66°
19
89°
67°
20
89°
68°
21
86°
68°
22
86°
67°
23
87°
68°
24
86°
68°
25
86°
67°
26
85°
67°
27
87°
66°
28
85°
67°
29
86°
67°
30
85°
66°
1
86°
65°
2
88°
64°
3
90°
59°
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 85° to 95°, with overnight lows between 59° and 73°. The average high for September is 89° with an average low of 68°. 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.