S
M
T
W
T
F
S
31
82°
66°
1
86°
64°
2
82°
57°
3
82°
57°
4
84°
57°
5
81°
68°
6
88°
73°
7
82°
72°
8
82°
70°
9
88°
72°
10
84°
68°
11
84°
61°
12
81°
57°
13
79°
66°
14
72°
55°
15
77°
52°
16
73°
59°
17
79°
57°
18
75°
59°
19
81°
57°
20
79°
61°
21
68°
59°
22
75°
59°
23
79°
55°
24
82°
63°
25
82°
65°
26
74°
63°
27
83°
71°
28
93°
73°
29
93°
75°
30
94°
73°
1
94°
72°
2
93°
73°
3
92°
72°
4
91°
70°
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 74° to 94°, with overnight lows between 63° and 75°. The average high for June is 89° 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 June weather will actually feel in Monticello. See also: July | August | September.
