S
M
T
W
T
F
S
26
82°
68°
27
83°
63°
28
82°
63°
29
82°
64°
30
84°
67°
31
87°
68°
1
86°
63°
2
82°
63°
3
82°
64°
4
83°
62°
5
81°
62°
6
81°
63°
7
82°
62°
8
81°
63°
9
81°
66°
10
82°
68°
11
81°
67°
12
82°
65°
13
85°
67°
14
87°
61°
15
85°
61°
16
81°
64°
17
85°
66°
18
86°
62°
19
81°
61°
20
80°
60°
21
81°
64°
22
82°
62°
23
81°
66°
24
80°
66°
25
81°
65°
26
81°
67°
27
85°
67°
28
86°
66°
29
86°
66°
30
85°
59°
31
80°
60°
1
80°
59°
2
79°
59°
3
80°
65°
4
80°
59°
5
84°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Opal
Opal's August 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 59° and 68°. The average high for August is 83° 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 Opal. See also: September | October | November.