S
M
T
W
T
F
S
26
88°
68°
27
96°
66°
28
92°
68°
29
91°
68°
30
90°
69°
31
92°
64°
1
93°
64°
2
91°
65°
3
92°
67°
4
91°
68°
5
89°
67°
6
89°
67°
7
90°
69°
8
91°
68°
9
90°
68°
10
93°
70°
11
94°
68°
12
94°
64°
13
93°
64°
14
93°
65°
15
91°
65°
16
90°
64°
17
85°
65°
18
91°
67°
19
93°
68°
20
94°
68°
21
94°
67°
22
92°
68°
23
93°
66°
24
92°
67°
25
93°
68°
26
91°
67°
27
91°
65°
28
89°
63°
29
88°
63°
30
88°
64°
31
90°
68°
1
93°
66°
2
92°
67°
3
93°
66°
4
94°
66°
5
94°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arivaca Junction
Arivaca Junction's August 2026 forecast shows daily high temperatures ranging from 85° to 96°, with overnight lows between 63° and 70°. The average high for August is 92° with an average low of 66°. 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 Arivaca Junction. See also: September | October | November.