S
M
T
W
T
F
S
26
87°
73°
27
91°
73°
28
91°
72°
29
93°
74°
30
92°
73°
31
92°
72°
1
90°
72°
2
90°
71°
3
89°
72°
4
91°
73°
5
90°
72°
6
91°
73°
7
87°
66°
8
91°
67°
9
90°
66°
10
87°
65°
11
86°
64°
12
87°
65°
13
90°
69°
14
91°
70°
15
90°
70°
16
86°
69°
17
85°
67°
18
89°
70°
19
87°
68°
20
84°
69°
21
86°
68°
22
85°
64°
23
88°
64°
24
90°
65°
25
91°
67°
26
91°
69°
27
90°
68°
28
90°
68°
29
88°
67°
30
87°
68°
31
88°
66°
1
82°
62°
2
83°
62°
3
82°
61°
4
81°
60°
5
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lafayette
Lafayette's August 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 60° and 74°. The average high for August is 88° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Lafayette. See also: September | October | November.