S
M
T
W
T
F
S
31
71°
49°
1
65°
47°
2
65°
45°
3
64°
45°
4
66°
46°
5
67°
53°
6
71°
54°
7
74°
55°
8
74°
56°
9
73°
55°
10
73°
48°
11
67°
47°
12
67°
48°
13
69°
50°
14
69°
48°
15
67°
47°
16
68°
48°
17
69°
49°
18
69°
50°
19
74°
57°
20
77°
57°
21
72°
53°
22
71°
51°
23
78°
59°
24
79°
59°
25
78°
58°
26
74°
53°
27
74°
53°
28
75°
56°
29
80°
52°
30
74°
52°
1
75°
58°
2
77°
60°
3
81°
60°
4
79°
61°
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 64° to 81°, with overnight lows between 45° and 61°. The average high for June is 72° with an average low of 53°. 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.
