S
M
T
W
T
F
S
26
90°
72°
27
89°
70°
28
92°
72°
29
85°
68°
30
83°
63°
31
87°
59°
1
84°
68°
2
76°
67°
3
82°
67°
4
85°
66°
5
88°
67°
6
90°
69°
7
91°
71°
8
88°
68°
9
89°
64°
10
92°
71°
11
93°
68°
12
90°
68°
13
92°
71°
14
94°
72°
15
95°
73°
16
96°
72°
17
90°
73°
18
86°
65°
19
90°
69°
20
84°
69°
21
85°
64°
22
87°
63°
23
84°
63°
24
82°
66°
25
84°
68°
26
85°
69°
27
86°
65°
28
85°
66°
29
86°
65°
30
86°
68°
31
87°
67°
1
86°
65°
2
87°
68°
3
81°
63°
4
85°
69°
5
83°
67°
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 90°, with overnight lows between 63° and 69°. The average high for August is 85° with an average low of 66°. 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.