S
M
T
W
T
F
S
26
92°
70°
27
92°
69°
28
91°
70°
29
94°
70°
30
94°
71°
31
95°
71°
1
94°
74°
2
94°
75°
3
97°
75°
4
98°
74°
5
99°
74°
6
99°
70°
7
93°
69°
8
91°
69°
9
91°
70°
10
92°
71°
11
93°
71°
12
96°
70°
13
94°
70°
14
95°
71°
15
96°
74°
16
97°
71°
17
96°
67°
18
89°
67°
19
90°
71°
20
93°
75°
21
96°
74°
22
96°
74°
23
95°
73°
24
96°
73°
25
95°
74°
26
95°
74°
27
94°
73°
28
94°
74°
29
92°
73°
30
93°
72°
31
92°
71°
1
91°
70°
2
91°
70°
3
92°
68°
4
93°
70°
5
87°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Granite
Granite's August 2026 forecast shows daily high temperatures ranging from 87° to 99°, with overnight lows between 67° and 75°. The average high for August is 94° with an average low of 71°. 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 Granite. See also: September | October | November.