S
M
T
W
T
F
S
26
93°
75°
27
94°
75°
28
93°
74°
29
92°
74°
30
91°
73°
31
91°
72°
1
90°
72°
2
90°
73°
3
91°
72°
4
90°
72°
5
91°
71°
6
84°
72°
7
88°
72°
8
84°
71°
9
84°
68°
10
85°
68°
11
84°
69°
12
87°
71°
13
86°
71°
14
90°
72°
15
91°
72°
16
91°
71°
17
89°
71°
18
91°
70°
19
91°
71°
20
90°
71°
21
81°
59°
22
80°
61°
23
82°
60°
24
81°
62°
25
83°
68°
26
89°
69°
27
90°
68°
28
90°
68°
29
89°
65°
30
89°
63°
31
80°
66°
1
86°
66°
2
88°
65°
3
89°
68°
4
90°
65°
5
89°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Boonville
Boonville's August 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 59° and 75°. The average high for August is 88° with an average low of 69°. 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 Boonville. See also: September | October | November.