S
M
T
W
T
F
S
26
108°
82°
27
109°
79°
28
100°
68°
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
107°
72°
9
103°
71°
10
102°
67°
11
104°
70°
12
103°
70°
13
103°
69°
14
102°
70°
15
103°
70°
16
103°
69°
17
102°
70°
18
103°
70°
19
103°
69°
20
102°
71°
21
102°
70°
22
101°
70°
23
102°
69°
24
101°
69°
25
100°
68°
26
98°
66°
27
94°
65°
28
93°
61°
29
92°
59°
30
92°
59°
31
93°
60°
1
92°
59°
2
92°
59°
3
91°
58°
4
91°
58°
5
92°
59°
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 91° to 111°, with overnight lows between 58° and 75°. The average high for August is 101° with an average low of 67°. 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.