S
M
T
W
T
F
S
27
75°
58°
28
76°
55°
29
74°
59°
30
80°
56°
1
86°
57°
2
90°
59°
3
69°
53°
4
66°
55°
5
76°
54°
6
66°
44°
7
74°
42°
8
80°
55°
9
75°
48°
10
70°
59°
11
71°
61°
12
81°
55°
13
83°
62°
14
79°
52°
15
68°
50°
16
68°
50°
17
64°
43°
18
62°
41°
19
60°
44°
20
62°
44°
21
64°
42°
22
63°
41°
23
60°
38°
24
59°
35°
25
59°
36°
26
66°
39°
27
69°
37°
28
58°
34°
29
57°
33°
30
57°
33°
31
63°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lake Monticello
Lake Monticello's October 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 33° and 62°. The average high for October is 66° with an average low of 44°. 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 Lake Monticello. See also: November | December | January.
