S
M
T
W
T
F
S
31
93°
73°
1
93°
76°
2
88°
71°
3
87°
67°
4
85°
69°
5
87°
67°
6
88°
69°
7
88°
75°
8
91°
76°
9
91°
75°
10
91°
72°
11
93°
76°
12
90°
73°
13
93°
72°
14
86°
73°
15
78°
71°
16
87°
71°
17
92°
70°
18
N/A
19
82°
71°
20
81°
74°
21
91°
75°
22
92°
71°
23
86°
72°
24
83°
71°
25
87°
72°
26
91°
73°
27
92°
74°
28
90°
73°
29
91°
73°
30
90°
74°
1
91°
72°
2
90°
75°
3
92°
74°
4
93°
76°
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 81° to 93°, with overnight lows between 71° and 76°. The average high for June is 89° 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.