S
M
T
W
T
F
S
27
61°
54°
28
62°
55°
29
60°
55°
30
N/A
1
71°
59°
2
78°
48°
3
68°
41°
4
60°
47°
5
63°
40°
6
55°
34°
7
60°
42°
8
65°
46°
9
62°
40°
10
62°
42°
11
61°
43°
12
62°
45°
13
61°
38°
14
53°
33°
15
52°
33°
16
58°
36°
17
62°
42°
18
61°
42°
19
59°
41°
20
59°
37°
21
54°
35°
22
51°
37°
23
52°
36°
24
60°
40°
25
60°
40°
26
59°
32°
27
48°
29°
28
49°
29°
29
54°
34°
30
51°
31°
31
52°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Monticello
Monticello's October 2026 forecast shows daily high temperatures ranging from 48° to 78°, with overnight lows between 29° and 59°. The average high for October is 59° with an average low of 39°. 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.
