S
M
T
W
T
F
S
27
84°
50°
28
82°
50°
29
86°
54°
30
90°
61°
1
88°
68°
2
N/A
3
83°
71°
4
75°
67°
5
78°
63°
6
79°
54°
7
78°
49°
8
81°
51°
9
82°
52°
10
78°
56°
11
79°
56°
12
78°
55°
13
80°
54°
14
77°
56°
15
77°
52°
16
76°
50°
17
76°
52°
18
77°
49°
19
76°
52°
20
75°
51°
21
76°
52°
22
77°
51°
23
75°
48°
24
77°
44°
25
71°
40°
26
69°
45°
27
74°
40°
28
67°
39°
29
68°
41°
30
75°
48°
31
76°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Monticello
Monticello's October 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 39° and 71°. The average high for October is 76° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Monticello. See also: November | December | January.