S
M
T
W
T
F
S
28
95°
76°
29
98°
74°
30
97°
76°
1
92°
73°
2
91°
73°
3
92°
74°
4
94°
76°
5
92°
74°
6
91°
75°
7
91°
74°
8
92°
74°
9
92°
75°
10
93°
73°
11
94°
76°
12
93°
75°
13
94°
76°
14
93°
76°
15
92°
75°
16
92°
73°
17
87°
71°
18
88°
71°
19
90°
74°
20
92°
75°
21
91°
76°
22
92°
76°
23
94°
75°
24
94°
76°
25
93°
75°
26
94°
76°
27
94°
76°
28
93°
75°
29
95°
76°
30
95°
76°
31
94°
75°
1
95°
77°
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 87° to 98°, with overnight lows between 71° and 77°. The average high for July is 93° with an average low of 75°. 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.