S
M
T
W
T
F
S
26
97°
73°
27
98°
74°
28
99°
75°
29
99°
75°
30
101°
76°
31
100°
75°
1
96°
76°
2
100°
72°
3
102°
68°
4
101°
78°
5
100°
75°
6
101°
75°
7
100°
72°
8
99°
71°
9
100°
72°
10
99°
75°
11
101°
75°
12
102°
77°
13
102°
78°
14
98°
77°
15
103°
79°
16
102°
74°
17
104°
70°
18
102°
72°
19
102°
75°
20
103°
74°
21
104°
75°
22
107°
73°
23
105°
71°
24
105°
75°
25
105°
76°
26
104°
77°
27
102°
74°
28
101°
75°
29
100°
75°
30
99°
74°
31
98°
75°
1
99°
74°
2
100°
75°
3
99°
72°
4
100°
72°
5
99°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mendoza
Mendoza's August 2026 forecast shows daily high temperatures ranging from 98° to 105°, with overnight lows between 72° and 77°. The average high for August is 101° with an average low of 74°. 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 Mendoza. See also: September | October | November.