S
M
T
W
T
F
S
26
101°
77°
27
101°
78°
28
106°
80°
29
107°
77°
30
101°
78°
31
101°
79°
1
104°
81°
2
105°
78°
3
101°
75°
4
100°
77°
5
101°
77°
6
101°
81°
7
106°
78°
8
105°
80°
9
107°
80°
10
108°
77°
11
105°
78°
12
103°
80°
13
105°
77°
14
102°
75°
15
102°
78°
16
105°
80°
17
107°
80°
18
108°
81°
19
108°
81°
20
107°
80°
21
108°
79°
22
106°
77°
23
105°
77°
24
103°
75°
25
104°
73°
26
103°
74°
27
105°
74°
28
107°
75°
29
106°
76°
30
107°
73°
31
107°
76°
1
106°
77°
2
107°
77°
3
106°
74°
4
99°
71°
5
97°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Summer Mesa
Summer Mesa's August 2026 forecast shows daily high temperatures ranging from 97° to 108°, with overnight lows between 71° and 81°. The average high for August is 104° 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 Summer Mesa. See also: September | October | November.
