S
M
T
W
T
F
S
26
87°
73°
27
87°
76°
28
90°
75°
29
81°
65°
30
68°
63°
1
64°
53°
2
75°
50°
3
79°
52°
4
82°
57°
5
86°
69°
6
79°
62°
7
69°
58°
8
80°
61°
9
88°
73°
10
88°
65°
11
77°
64°
12
83°
62°
13
87°
61°
14
89°
64°
15
89°
69°
16
88°
71°
17
87°
77°
18
91°
77°
19
86°
67°
20
81°
66°
21
80°
67°
22
87°
66°
23
86°
67°
24
87°
64°
25
89°
67°
26
88°
69°
27
78°
66°
28
90°
70°
29
93°
73°
30
93°
72°
31
93°
72°
1
95°
74°
2
96°
72°
3
92°
70°
4
91°
71°
5
91°
73°
6
91°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boonville
Boonville's May 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 66° and 74°. The average high for May is 91° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Boonville. See also: June | July | August.