S
M
T
W
T
F
S
26
108°
82°
27
108°
79°
28
105°
77°
29
101°
80°
30
106°
80°
31
106°
79°
1
105°
81°
2
106°
80°
3
103°
78°
4
101°
79°
5
103°
80°
6
106°
80°
7
107°
81°
8
107°
81°
9
106°
80°
10
107°
81°
11
108°
76°
12
100°
80°
13
103°
78°
14
104°
73°
15
106°
76°
16
103°
79°
17
Hist. Avg.
101°
76°
18
Hist. Avg.
101°
76°
19
Hist. Avg.
101°
76°
20
Hist. Avg.
101°
76°
21
Hist. Avg.
101°
76°
22
Hist. Avg.
101°
76°
23
Hist. Avg.
101°
76°
24
Hist. Avg.
101°
76°
25
Hist. Avg.
101°
76°
26
Hist. Avg.
101°
75°
27
Hist. Avg.
101°
75°
28
Hist. Avg.
101°
75°
29
Hist. Avg.
101°
75°
30
Hist. Avg.
100°
75°
31
Hist. Avg.
100°
75°
1
Hist. Avg.
100°
75°
2
Hist. Avg.
100°
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
*Temporarily Unavailable
August Weather in Mesa
Mesa's August 2026 forecast shows daily high temperatures ranging from 100° to 108°, with overnight lows between 73° and 82°. The average high for August is 105° with an average low of 79°. 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.