S
M
T
W
T
F
S
26
98°
80°
27
106°
85°
28
105°
81°
29
103°
82°
30
98°
80°
31
97°
80°
1
98°
81°
2
99°
83°
3
103°
84°
4
105°
84°
5
105°
85°
6
104°
85°
7
103°
84°
8
102°
83°
9
104°
84°
10
104°
84°
11
102°
83°
12
104°
82°
13
98°
81°
14
103°
84°
15
104°
83°
16
104°
83°
17
103°
82°
18
105°
84°
19
105°
83°
20
104°
83°
21
103°
82°
22
98°
83°
23
98°
81°
24
106°
84°
25
107°
85°
26
107°
84°
27
105°
78°
28
102°
79°
29
101°
75°
30
98°
77°
31
99°
76°
1
99°
75°
2
100°
74°
3
97°
75°
4
100°
77°
5
104°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fountain Hills
Fountain Hills's August 2026 forecast shows daily high temperatures ranging from 97° to 107°, with overnight lows between 74° and 85°. The average high for August is 102° with an average low of 81°. 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 Fountain Hills. See also: September | October | November.
