S
M
T
W
T
F
S
28
50°
38°
29
47°
20°
30
44°
20°
31
48°
23°
1
50°
30°
2
50°
32°
3
42°
31°
4
47°
35°
5
50°
29°
6
44°
28°
7
45°
29°
8
40°
29°
9
33°
19°
10
35°
16°
11
46°
29°
12
47°
22°
13
59°
28°
14
46°
28°
15
54°
32°
16
58°
36°
17
46°
28°
18
50°
26°
19
46°
27°
20
44°
21°
21
43°
27°
22
45°
25°
23
42°
28°
24
38°
24°
25
38°
14°
26
42°
18°
27
42°
18°
28
40°
22°
29
46°
25°
30
49°
27°
31
51°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Monticello
Monticello's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Monticello. See also: February | March | April.
