S
M
T
W
T
F
S
26
103°
76°
27
103°
75°
28
104°
76°
29
104°
76°
30
105°
77°
31
105°
77°
1
106°
76°
2
105°
77°
3
105°
77°
4
104°
76°
5
104°
77°
6
103°
76°
7
102°
75°
8
103°
76°
9
104°
76°
10
104°
75°
11
103°
75°
12
98°
74°
13
98°
74°
14
97°
71°
15
98°
73°
16
102°
72°
17
103°
71°
18
101°
72°
19
99°
73°
20
103°
74°
21
103°
75°
22
102°
74°
23
104°
74°
24
103°
73°
25
103°
73°
26
102°
72°
27
102°
71°
28
103°
69°
29
102°
70°
30
101°
68°
31
100°
66°
1
102°
68°
2
102°
71°
3
103°
69°
4
102°
66°
5
101°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tonto Basin
Tonto Basin's August 2026 forecast shows daily high temperatures ranging from 97° to 106°, with overnight lows between 66° and 77°. The average high for August is 102° with an average low of 73°. 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 Tonto Basin. See also: September | October | November.