S
M
T
W
T
F
S
26
108°
88°
27
109°
90°
28
104°
84°
29
108°
88°
30
109°
90°
31
113°
90°
1
113°
87°
2
111°
90°
3
113°
90°
4
104°
87°
5
102°
90°
6
104°
84°
7
108°
87°
8
109°
93°
9
109°
88°
10
106°
84°
11
100°
81°
12
100°
80°
13
99°
76°
14
99°
79°
15
104°
82°
16
106°
84°
17
109°
84°
18
109°
86°
19
108°
73°
20
102°
79°
21
111°
84°
22
111°
86°
23
109°
83°
24
107°
86°
25
114°
87°
26
114°
87°
27
115°
88°
28
113°
88°
29
108°
81°
30
106°
79°
31
108°
82°
1
106°
83°
2
108°
81°
3
107°
80°
4
105°
77°
5
103°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mesa
Mesa's August 2026 forecast shows daily high temperatures ranging from 103° to 115°, with overnight lows between 77° and 88°. The average high for August is 109° with an average low of 83°. 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 Mesa. See also: September | October | November.
