S
M
T
W
T
F
S
30
87°
67°
31
93°
67°
1
95°
74°
2
94°
72°
3
95°
72°
4
96°
74°
5
95°
70°
6
83°
62°
7
82°
57°
8
87°
70°
9
84°
66°
10
80°
54°
11
81°
62°
12
83°
64°
13
85°
64°
14
84°
62°
15
74°
58°
16
71°
54°
17
70°
50°
18
70°
52°
19
69°
48°
20
72°
52°
21
76°
51°
22
72°
56°
23
74°
56°
24
79°
57°
25
80°
57°
26
80°
56°
27
79°
57°
28
80°
58°
29
79°
58°
30
79°
57°
1
75°
51°
2
68°
46°
3
65°
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 87°, with overnight lows between 42° and 70°. The average high for September is 77° with an average low of 56°. 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.