S
M
T
W
T
F
S
29
62°
28°
30
69°
49°
31
83°
55°
1
86°
61°
2
84°
54°
3
83°
53°
4
86°
61°
5
73°
51°
6
66°
40°
7
60°
39°
8
56°
31°
9
65°
30°
10
80°
38°
11
79°
51°
12
76°
51°
13
77°
63°
14
88°
59°
15
92°
61°
16
91°
60°
17
85°
63°
18
89°
54°
19
66°
44°
20
62°
36°
21
63°
48°
22
78°
52°
23
81°
56°
24
84°
57°
25
81°
52°
26
72°
47°
27
69°
51°
28
68°
49°
29
65°
47°
30
67°
46°
1
66°
45°
2
68°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lake Monticello
Lake Monticello's April 2026 forecast shows daily high temperatures ranging from 62° to 84°, with overnight lows between 36° and 57°. The average high for April is 71° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Lake Monticello. See also: May | June | July.