S
M
T
W
T
F
S
26
87°
64°
27
88°
65°
28
91°
61°
29
87°
61°
30
84°
60°
31
84°
59°
1
84°
59°
2
85°
60°
3
85°
59°
4
86°
59°
5
87°
62°
6
87°
61°
7
88°
62°
8
85°
61°
9
84°
61°
10
83°
59°
11
84°
60°
12
85°
60°
13
84°
59°
14
84°
60°
15
85°
59°
16
84°
59°
17
85°
61°
18
85°
61°
19
86°
62°
20
88°
61°
21
87°
61°
22
86°
62°
23
86°
61°
24
85°
59°
25
85°
59°
26
86°
62°
27
90°
62°
28
88°
57°
29
89°
56°
30
88°
57°
31
89°
60°
1
90°
61°
2
91°
64°
3
93°
65°
4
93°
64°
5
91°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sierra Vista
Sierra Vista's August 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 56° and 65°. The average high for August is 87° with an average low of 61°. 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 Sierra Vista. See also: September | October | November.
