S
M
T
W
T
F
S
26
86°
71°
27
86°
64°
28
86°
66°
29
87°
70°
30
91°
66°
31
90°
71°
1
93°
66°
2
88°
62°
3
87°
67°
4
84°
64°
5
85°
65°
6
84°
64°
7
85°
66°
8
84°
67°
9
85°
67°
10
87°
68°
11
88°
70°
12
85°
71°
13
92°
71°
14
92°
63°
15
90°
63°
16
83°
69°
17
85°
70°
18
89°
63°
19
89°
63°
20
84°
66°
21
87°
66°
22
89°
65°
23
87°
67°
24
88°
68°
25
89°
67°
26
90°
64°
27
83°
66°
28
86°
65°
29
84°
67°
30
88°
67°
31
88°
66°
1
88°
65°
2
86°
65°
3
82°
60°
4
84°
58°
5
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Harrisonville
Harrisonville's August 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 58° and 71°. The average high for August is 87° 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 Harrisonville. See also: September | October | November.