S
M
T
W
T
F
S
31
82°
72°
1
90°
72°
2
88°
68°
3
82°
64°
4
82°
54°
5
88°
59°
6
90°
64°
7
91°
66°
8
90°
73°
9
86°
72°
10
91°
68°
11
93°
72°
12
95°
73°
13
98°
73°
14
93°
73°
15
86°
72°
16
81°
72°
17
81°
72°
18
88°
77°
19
86°
70°
20
88°
68°
21
82°
70°
22
91°
70°
23
90°
77°
24
88°
68°
25
88°
70°
26
86°
72°
27
N/A
28
95°
72°
29
95°
73°
30
88°
72°
1
90°
71°
2
93°
73°
3
95°
74°
4
93°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Monticello
Monticello's June 2026 forecast shows daily high temperatures ranging from 88° to 95°, with overnight lows between 71° and 74°. The average high for June is 93° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Monticello. See also: July | August | September.