S
M
T
W
T
F
S
26
108°
82°
27
109°
79°
28
N/A
29
103°
69°
30
105°
71°
31
107°
73°
1
107°
75°
2
111°
70°
3
109°
72°
4
111°
70°
5
109°
69°
6
111°
73°
7
107°
72°
8
104°
72°
9
103°
73°
10
102°
72°
11
101°
67°
12
103°
70°
13
103°
69°
14
101°
71°
15
96°
70°
16
99°
69°
17
101°
69°
18
102°
68°
19
101°
69°
20
99°
68°
21
99°
69°
22
101°
69°
23
99°
68°
24
99°
68°
25
101°
69°
26
100°
67°
27
101°
68°
28
101°
68°
29
100°
67°
30
100°
67°
31
99°
66°
1
100°
67°
2
100°
68°
3
97°
66°
4
98°
67°
5
99°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Coso Junction
Coso Junction's August 2026 forecast shows daily high temperatures ranging from 96° to 111°, with overnight lows between 66° and 75°. The average high for August is 102° with an average low of 69°. 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 Coso Junction. See also: September | October | November.