S
M
T
W
T
F
S
26
89°
65°
27
86°
67°
28
90°
67°
29
90°
66°
30
89°
62°
31
85°
62°
1
86°
63°
2
85°
61°
3
84°
62°
4
85°
61°
5
85°
62°
6
86°
64°
7
84°
65°
8
84°
65°
9
85°
66°
10
84°
64°
11
84°
66°
12
85°
63°
13
88°
63°
14
88°
64°
15
87°
66°
16
89°
65°
17
87°
64°
18
88°
62°
19
83°
61°
20
85°
60°
21
84°
59°
22
85°
60°
23
85°
61°
24
86°
60°
25
87°
62°
26
87°
63°
27
Hist. Avg.
84°
61°
28
Hist. Avg.
84°
61°
29
Hist. Avg.
84°
60°
30
Hist. Avg.
84°
60°
31
Hist. Avg.
83°
60°
1
Hist. Avg.
83°
60°
2
Hist. Avg.
83°
60°
3
Hist. Avg.
83°
60°
4
Hist. Avg.
82°
59°
5
Hist. Avg.
82°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Boonville
Boonville's August 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 59° and 67°. The average high for August is 86° with an average low of 63°. 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.