S
M
T
W
T
F
S
26
86°
68°
27
85°
63°
28
84°
62°
29
85°
63°
30
87°
67°
31
85°
64°
1
87°
68°
2
89°
68°
3
90°
64°
4
83°
63°
5
84°
67°
6
84°
67°
7
85°
63°
8
83°
65°
9
86°
68°
10
88°
68°
11
85°
67°
12
86°
68°
13
86°
68°
14
85°
67°
15
89°
68°
16
89°
62°
17
84°
67°
18
87°
67°
19
84°
63°
20
83°
61°
21
83°
62°
22
84°
64°
23
89°
65°
24
90°
66°
25
89°
65°
26
86°
64°
27
83°
60°
28
82°
60°
29
82°
61°
30
83°
60°
31
85°
62°
1
87°
64°
2
87°
64°
3
83°
63°
4
86°
64°
5
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Coal Valley
Coal Valley's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 60° and 68°. The average high for August is 86° with an average low of 65°. 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 Coal Valley. See also: September | October | November.