S
M
T
W
T
F
S
31
66°
50°
1
69°
45°
2
68°
44°
3
67°
43°
4
66°
45°
5
68°
48°
6
73°
54°
7
75°
47°
8
69°
48°
9
70°
46°
10
70°
47°
11
69°
48°
12
70°
48°
13
70°
49°
14
69°
49°
15
73°
54°
16
76°
52°
17
73°
51°
18
71°
49°
19
70°
50°
20
72°
55°
21
72°
58°
22
80°
59°
23
81°
59°
24
82°
58°
25
82°
59°
26
81°
56°
27
80°
55°
28
80°
56°
29
81°
59°
30
80°
60°
1
81°
55°
2
79°
53°
3
74°
52°
4
75°
54°
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 66° to 82°, with overnight lows between 43° and 60°. The average high for June is 74° with an average low of 52°. 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.
