S
M
T
W
T
F
S
30
83°
58°
31
87°
57°
1
79°
57°
2
79°
62°
3
80°
62°
4
80°
57°
5
82°
56°
6
80°
61°
7
79°
56°
8
80°
55°
9
80°
60°
10
78°
60°
11
81°
54°
12
77°
53°
13
77°
53°
14
78°
54°
15
80°
58°
16
82°
58°
17
81°
57°
18
77°
51°
19
75°
56°
20
76°
56°
21
74°
51°
22
74°
53°
23
79°
56°
24
78°
55°
25
79°
56°
26
78°
49°
27
77°
49°
28
73°
48°
29
73°
47°
30
71°
48°
1
71°
51°
2
Hist. Avg.
74°
51°
3
Hist. Avg.
73°
50°
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 71° to 87°, with overnight lows between 47° and 62°. The average high for September is 78° with an average low of 55°. 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.