S
M
T
W
T
F
S
1
62°
43°
2
58°
34°
3
57°
33°
4
57°
34°
5
57°
29°
6
57°
23°
7
56°
29°
8
63°
38°
9
62°
37°
10
63°
37°
11
63°
32°
12
67°
41°
13
68°
32°
14
68°
43°
15
52°
37°
16
71°
32°
17
71°
42°
18
74°
55°
19
78°
49°
20
81°
50°
21
82°
50°
22
78°
52°
23
78°
51°
24
79°
49°
25
82°
52°
26
78°
46°
27
75°
47°
28
68°
45°
29
72°
45°
30
71°
45°
31
64°
48°
1
65°
43°
2
63°
37°
3
52°
28°
4
63°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Monticello
Monticello's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March 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 March weather will actually feel in Monticello. See also: April | May | June.