S
M
T
W
T
F
S
30
90°
67°
31
92°
71°
1
93°
71°
2
95°
71°
3
97°
71°
4
98°
72°
5
93°
70°
6
85°
64°
7
86°
59°
8
88°
69°
9
92°
71°
10
80°
72°
11
83°
70°
12
83°
71°
13
90°
68°
14
80°
58°
15
93°
62°
16
93°
73°
17
95°
71°
18
87°
68°
19
90°
69°
20
87°
69°
21
85°
67°
22
80°
62°
23
78°
62°
24
76°
59°
25
75°
57°
26
80°
58°
27
79°
59°
28
80°
58°
29
82°
53°
30
80°
59°
1
80°
58°
2
74°
59°
3
72°
58°
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 72° to 95°, with overnight lows between 53° and 73°. The average high for September is 82° with an average low of 62°. 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.