S
M
T
W
T
F
S
26
86°
57°
27
84°
58°
28
87°
58°
29
88°
57°
30
89°
58°
31
90°
58°
1
89°
57°
2
89°
59°
3
88°
58°
4
88°
57°
5
87°
57°
6
88°
56°
7
88°
57°
8
87°
56°
9
88°
56°
10
87°
55°
11
83°
56°
12
82°
54°
13
82°
54°
14
82°
51°
15
83°
55°
16
87°
53°
17
88°
52°
18
86°
50°
19
82°
52°
20
84°
55°
21
85°
52°
22
86°
54°
23
88°
52°
24
82°
49°
25
86°
51°
26
87°
48°
27
86°
51°
28
87°
50°
29
87°
52°
30
86°
50°
31
86°
48°
1
87°
51°
2
88°
53°
3
88°
51°
4
86°
47°
5
86°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grants
Grants's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 47° and 59°. The average high for August is 86° with an average low of 54°. 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 Grants. See also: September | October | November.