S
M
T
W
T
F
S
30
83°
63°
31
85°
64°
1
88°
64°
2
85°
65°
3
88°
67°
4
88°
60°
5
84°
66°
6
87°
66°
7
84°
65°
8
84°
65°
9
82°
64°
10
84°
65°
11
86°
64°
12
86°
64°
13
85°
63°
14
84°
64°
15
85°
65°
16
85°
64°
17
84°
56°
18
80°
59°
19
79°
56°
20
80°
55°
21
77°
55°
22
75°
56°
23
77°
58°
24
82°
56°
25
82°
59°
26
80°
59°
27
81°
58°
28
81°
57°
29
80°
56°
30
80°
57°
1
79°
56°
2
79°
57°
3
74°
51°
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 74° to 88°, with overnight lows between 51° and 67°. The average high for September is 82° with an average low of 61°. 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.