S
M
T
W
T
F
S
26
90°
71°
27
88°
71°
28
89°
70°
29
86°
70°
30
89°
68°
31
82°
67°
1
83°
63°
2
82°
65°
3
81°
65°
4
81°
66°
5
84°
69°
6
90°
71°
7
91°
71°
8
91°
70°
9
90°
69°
10
89°
69°
11
89°
68°
12
88°
68°
13
89°
70°
14
91°
68°
15
86°
62°
16
82°
59°
17
83°
60°
18
82°
58°
19
83°
59°
20
81°
57°
21
80°
58°
22
81°
56°
23
85°
60°
24
86°
65°
25
89°
65°
26
91°
66°
27
89°
67°
28
91°
64°
29
91°
58°
30
81°
57°
31
79°
59°
1
79°
54°
2
78°
57°
3
80°
62°
4
87°
62°
5
86°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Waco
Waco's August 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 54° and 71°. The average high for August is 86° 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 Waco. See also: September | October | November.