S
M
T
W
T
F
S
26
102°
84°
27
102°
85°
28
107°
87°
29
108°
84°
30
102°
85°
31
102°
86°
1
105°
88°
2
106°
85°
3
102°
82°
4
101°
84°
5
102°
83°
6
104°
87°
7
107°
85°
8
106°
87°
9
108°
87°
10
109°
84°
11
106°
85°
12
104°
87°
13
106°
84°
14
104°
82°
15
104°
84°
16
107°
87°
17
108°
86°
18
109°
88°
19
109°
88°
20
110°
87°
21
109°
87°
22
107°
84°
23
106°
84°
24
104°
83°
25
105°
81°
26
105°
82°
27
107°
82°
28
108°
81°
29
109°
83°
30
107°
81°
31
108°
84°
1
107°
85°
2
109°
85°
3
108°
82°
4
100°
79°
5
99°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tempe Junction
Tempe Junction's August 2026 forecast shows daily high temperatures ranging from 99° to 110°, with overnight lows between 79° and 88°. The average high for August is 106° with an average low of 84°. 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 Tempe Junction. See also: September | October | November.