S
M
T
W
T
F
S
29
54°
45°
30
52°
33°
31
49°
34°
1
59°
40°
2
53°
40°
3
61°
40°
4
70°
38°
5
73°
44°
6
74°
45°
7
70°
48°
8
65°
38°
9
72°
37°
10
60°
43°
11
66°
48°
12
57°
46°
13
63°
46°
14
58°
43°
15
55°
38°
16
55°
36°
17
58°
40°
18
70°
38°
19
74°
43°
20
76°
46°
21
75°
51°
22
51°
45°
23
62°
42°
24
57°
34°
25
56°
36°
26
58°
36°
27
60°
42°
28
58°
43°
29
65°
41°
30
70°
44°
1
72°
47°
2
73°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Marengo
Marengo's April 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 36° and 47°. The average high for April is 64° with an average low of 42°. 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 Marengo. See also: May | June | July.