S
M
T
W
T
F
S
30
82°
63°
31
84°
62°
1
84°
62°
2
83°
58°
3
81°
62°
4
81°
61°
5
80°
61°
6
77°
60°
7
77°
60°
8
78°
53°
9
77°
53°
10
75°
61°
11
80°
59°
12
81°
60°
13
81°
59°
14
80°
58°
15
81°
60°
16
74°
50°
17
74°
52°
18
73°
51°
19
Hist. Avg.
76°
51°
20
Hist. Avg.
76°
50°
21
Hist. Avg.
76°
50°
22
Hist. Avg.
75°
50°
23
Hist. Avg.
75°
49°
24
Hist. Avg.
74°
49°
25
Hist. Avg.
74°
48°
26
Hist. Avg.
74°
48°
27
Hist. Avg.
73°
48°
28
Hist. Avg.
73°
47°
29
Hist. Avg.
72°
47°
30
Hist. Avg.
72°
47°
1
Hist. Avg.
72°
46°
2
Hist. Avg.
71°
46°
3
Hist. Avg.
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lafayette
Lafayette's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 50° and 63°. The average high for September is 79° with an average low of 58°. 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.
