S
M
T
W
T
F
S
30
90°
68°
31
89°
68°
1
90°
67°
2
90°
68°
3
89°
68°
4
88°
67°
5
87°
66°
6
88°
66°
7
89°
67°
8
90°
67°
9
90°
66°
10
89°
67°
11
89°
67°
12
88°
66°
13
87°
67°
14
86°
64°
15
89°
64°
16
88°
63°
17
87°
64°
18
86°
57°
19
80°
55°
20
78°
55°
21
81°
56°
22
82°
55°
23
84°
59°
24
84°
61°
25
83°
55°
26
78°
55°
27
79°
57°
28
81°
58°
29
81°
57°
30
80°
55°
1
82°
56°
2
81°
57°
3
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in LaFayette
LaFayette's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 55° and 68°. The average high for September is 85° 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 LaFayette. See also: October | November | December.
