S
M
T
W
T
F
S
26
95°
64°
27
93°
61°
28
94°
61°
29
94°
60°
30
95°
59°
31
92°
56°
1
91°
54°
2
88°
57°
3
89°
58°
4
95°
63°
5
96°
64°
6
96°
63°
7
95°
61°
8
96°
59°
9
95°
59°
10
95°
50°
11
88°
52°
12
84°
51°
13
85°
52°
14
86°
52°
15
90°
55°
16
92°
58°
17
93°
58°
18
92°
57°
19
92°
56°
20
91°
55°
21
91°
50°
22
83°
47°
23
82°
46°
24
81°
48°
25
82°
49°
26
79°
46°
27
78°
46°
28
79°
47°
29
78°
48°
30
80°
51°
31
82°
52°
1
85°
54°
2
86°
54°
3
88°
55°
4
90°
54°
5
88°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grandview
Grandview's August 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 46° and 64°. The average high for August is 89° with an average low of 55°. 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 Grandview. See also: September | October | November.