S
M
T
W
T
F
S
26
91°
73°
27
89°
72°
28
84°
69°
29
88°
73°
30
91°
74°
31
91°
73°
1
86°
73°
2
88°
74°
3
84°
64°
4
84°
70°
5
85°
68°
6
90°
66°
7
86°
65°
8
85°
66°
9
86°
68°
10
85°
71°
11
87°
68°
12
84°
64°
13
84°
65°
14
83°
66°
15
83°
70°
16
84°
64°
17
83°
64°
18
82°
63°
19
82°
64°
20
83°
69°
21
84°
72°
22
89°
72°
23
88°
71°
24
89°
69°
25
89°
69°
26
88°
67°
27
81°
66°
28
82°
65°
29
82°
63°
30
83°
63°
31
80°
61°
1
80°
63°
2
81°
64°
3
83°
67°
4
83°
59°
5
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Olathe
Olathe's August 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 58° and 74°. The average high for August is 85° with an average low of 67°. 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 Olathe. See also: September | October | November.