S
M
T
W
T
F
S
26
94°
76°
27
94°
75°
28
95°
76°
29
95°
76°
30
94°
75°
31
93°
76°
1
95°
77°
2
95°
76°
3
94°
76°
4
95°
75°
5
94°
76°
6
93°
76°
7
89°
71°
8
91°
68°
9
86°
64°
10
87°
66°
11
85°
68°
12
91°
65°
13
83°
65°
14
82°
67°
15
84°
71°
16
84°
71°
17
91°
67°
18
85°
64°
19
82°
64°
20
82°
62°
21
83°
64°
22
83°
69°
23
88°
70°
24
89°
70°
25
89°
71°
26
88°
69°
27
88°
65°
28
87°
62°
29
80°
61°
30
81°
60°
31
80°
61°
1
81°
59°
2
78°
59°
3
78°
60°
4
79°
61°
5
78°
64°
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 78° to 95°, with overnight lows between 59° and 77°. The average high for August is 87° 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 Olathe. See also: September | October | November.