S
M
T
W
T
F
S
26
96°
63°
27
97°
65°
28
99°
66°
29
101°
66°
30
98°
67°
31
98°
68°
1
100°
65°
2
95°
61°
3
96°
62°
4
97°
61°
5
Hist. Avg.
98°
65°
6
Hist. Avg.
98°
64°
7
Hist. Avg.
98°
64°
8
Hist. Avg.
98°
64°
9
Hist. Avg.
98°
64°
10
Hist. Avg.
98°
64°
11
Hist. Avg.
98°
64°
12
Hist. Avg.
98°
63°
13
Hist. Avg.
98°
63°
14
Hist. Avg.
98°
63°
15
Hist. Avg.
98°
63°
16
Hist. Avg.
98°
62°
17
Hist. Avg.
98°
62°
18
Hist. Avg.
98°
62°
19
Hist. Avg.
98°
62°
20
Hist. Avg.
98°
61°
21
Hist. Avg.
98°
61°
22
Hist. Avg.
97°
61°
23
Hist. Avg.
97°
61°
24
Hist. Avg.
97°
61°
25
Hist. Avg.
97°
60°
26
Hist. Avg.
97°
60°
27
Hist. Avg.
97°
60°
28
Hist. Avg.
97°
60°
29
Hist. Avg.
96°
60°
30
Hist. Avg.
96°
59°
31
Hist. Avg.
96°
59°
1
Hist. Avg.
96°
59°
2
Hist. Avg.
96°
59°
3
Hist. Avg.
96°
58°
4
Hist. Avg.
95°
58°
5
Hist. Avg.
95°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Onyx
Onyx's August 2026 forecast shows daily high temperatures ranging from 95° to 101°, with overnight lows between 61° and 68°. The average high for August is 98° with an average low of 64°. 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 Onyx. See also: September | October | November.
