S
M
T
W
T
F
S
26
82°
66°
27
80°
59°
28
81°
62°
29
83°
63°
30
82°
59°
31
81°
57°
1
80°
58°
2
79°
57°
3
80°
58°
4
79°
56°
5
79°
58°
6
80°
58°
7
80°
59°
8
81°
63°
9
84°
61°
10
84°
61°
11
83°
59°
12
85°
64°
13
87°
56°
14
81°
57°
15
79°
60°
16
79°
60°
17
83°
56°
18
78°
55°
19
77°
56°
20
77°
55°
21
78°
56°
22
76°
54°
23
77°
55°
24
77°
54°
25
78°
62°
26
79°
62°
27
82°
63°
28
86°
55°
29
86°
55°
30
78°
54°
31
76°
58°
1
76°
60°
2
77°
52°
3
75°
51°
4
74°
59°
5
74°
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 74° to 87°, with overnight lows between 51° and 66°. The average high for August is 80° 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 August weather will actually feel in Lafayette. See also: September | October | November.