S
M
T
W
T
F
S
30
89°
63°
31
90°
64°
1
89°
66°
2
90°
65°
3
89°
62°
4
85°
63°
5
85°
62°
6
89°
66°
7
89°
66°
8
88°
64°
9
88°
65°
10
88°
65°
11
89°
64°
12
88°
66°
13
88°
65°
14
87°
64°
15
87°
60°
16
86°
63°
17
87°
61°
18
86°
59°
19
86°
62°
20
85°
63°
21
86°
63°
22
85°
62°
23
86°
61°
24
84°
62°
25
84°
61°
26
83°
61°
27
81°
60°
28
Hist. Avg.
81°
59°
29
Hist. Avg.
81°
59°
30
Hist. Avg.
80°
58°
1
Hist. Avg.
80°
58°
2
Hist. Avg.
80°
58°
3
Hist. Avg.
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lexington
Lexington's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 59° and 66°. The average high for September is 87° with an average low of 63°. 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.