S
M
T
W
T
F
S
26
78°
58°
27
78°
57°
28
84°
58°
29
75°
58°
30
85°
58°
31
92°
57°
1
87°
57°
2
99°
56°
3
92°
56°
4
86°
56°
5
84°
56°
6
86°
55°
7
89°
56°
8
92°
56°
9
83°
55°
10
79°
56°
11
82°
56°
12
85°
55°
13
84°
56°
14
84°
56°
15
83°
55°
16
79°
56°
17
80°
54°
18
81°
56°
19
79°
54°
20
79°
54°
21
84°
56°
22
83°
54°
23
81°
56°
24
84°
56°
25
84°
55°
26
85°
58°
27
84°
57°
28
84°
57°
29
83°
58°
30
82°
57°
31
83°
57°
1
82°
54°
2
82°
55°
3
84°
55°
4
79°
56°
5
79°
56°
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 79° to 99°, with overnight lows between 54° and 58°. The average high for August is 84° with an average low of 56°. 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.