S
M
T
W
T
F
S
28
81°
55°
29
86°
59°
30
86°
66°
1
94°
71°
2
95°
72°
3
95°
68°
4
88°
64°
5
84°
63°
6
82°
59°
7
80°
58°
8
82°
60°
9
80°
60°
10
79°
61°
11
80°
60°
12
78°
60°
13
80°
57°
14
73°
53°
15
73°
53°
16
74°
55°
17
75°
55°
18
75°
56°
19
76°
60°
20
78°
61°
21
76°
61°
22
81°
60°
23
76°
61°
24
80°
60°
25
81°
61°
26
82°
62°
27
83°
62°
28
82°
61°
29
81°
61°
30
81°
56°
31
74°
54°
1
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Monticello
Monticello's July 2026 forecast shows daily high temperatures ranging from 73° to 95°, with overnight lows between 53° and 72°. The average high for July is 81° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Monticello. See also: August | September | October.