S
M
T
W
T
F
S
26
82°
68°
27
84°
66°
28
80°
67°
29
82°
68°
30
80°
67°
31
79°
70°
1
81°
66°
2
78°
65°
3
80°
64°
4
79°
65°
5
78°
68°
6
79°
69°
7
78°
69°
8
80°
68°
9
79°
66°
10
79°
69°
11
80°
68°
12
80°
65°
13
79°
66°
14
81°
69°
15
84°
66°
16
78°
63°
17
78°
64°
18
79°
62°
19
77°
67°
20
77°
64°
21
78°
63°
22
75°
62°
23
75°
62°
24
76°
65°
25
75°
66°
26
76°
65°
27
77°
66°
28
75°
63°
29
78°
64°
30
83°
63°
31
84°
66°
1
82°
62°
2
83°
65°
3
81°
65°
4
81°
64°
5
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Black Rock
Black Rock's August 2026 forecast shows daily high temperatures ranging from 75° to 84°, with overnight lows between 62° and 70°. The average high for August is 79° 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 Black Rock. See also: September | October | November.