S
M
T
W
T
F
S
31
76°
50°
1
82°
54°
2
85°
56°
3
86°
63°
4
88°
59°
5
90°
63°
6
89°
64°
7
86°
60°
8
86°
60°
9
86°
60°
10
85°
65°
11
86°
64°
12
89°
61°
13
89°
65°
14
90°
66°
15
87°
65°
16
91°
62°
17
94°
63°
18
93°
68°
19
90°
64°
20
85°
58°
21
87°
65°
22
90°
61°
23
92°
60°
24
85°
63°
25
86°
57°
26
86°
57°
27
86°
61°
28
83°
63°
29
77°
54°
30
81°
54°
1
82°
54°
2
84°
55°
3
86°
58°
4
89°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Monticello
Monticello's June 2026 forecast shows daily high temperatures ranging from 84° to 89°, with overnight lows between 55° and 58°. The average high for June is 86° with an average low of 56°. 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.
