S
M
T
W
T
F
S
26
103°
77°
27
102°
78°
28
103°
76°
29
102°
77°
30
104°
80°
31
106°
81°
1
108°
80°
2
108°
80°
3
107°
82°
4
108°
80°
5
104°
79°
6
106°
77°
7
106°
75°
8
102°
76°
9
101°
79°
10
102°
80°
11
104°
79°
12
104°
74°
13
101°
77°
14
101°
76°
15
100°
74°
16
99°
72°
17
100°
72°
18
99°
73°
19
100°
71°
20
100°
72°
21
101°
78°
22
103°
80°
23
104°
80°
24
105°
79°
25
105°
79°
26
104°
78°
27
103°
77°
28
102°
78°
29
103°
78°
30
105°
77°
31
100°
78°
1
101°
76°
2
99°
74°
3
Hist. Avg.
100°
74°
4
Hist. Avg.
100°
74°
5
Hist. Avg.
100°
74°
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 99° to 108°, with overnight lows between 71° and 82°. The average high for August is 103° with an average low of 77°. 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.
