S
M
T
W
T
F
S
29
28°
17°
30
25°
7°
31
30°
-3°
1
38°
16°
2
32°
28°
3
42°
28°
4
50°
24°
5
37°
22°
6
42°
31°
7
46°
22°
8
32°
23°
9
40°
22°
10
48°
27°
11
53°
30°
12
50°
29°
13
45°
28°
14
48°
28°
15
52°
30°
16
56°
31°
17
52°
32°
18
51°
36°
19
45°
32°
20
46°
27°
21
48°
34°
22
48°
34°
23
49°
29°
24
49°
36°
25
57°
33°
26
60°
38°
27
61°
41°
28
63°
41°
29
64°
42°
30
64°
43°
1
66°
45°
2
66°
45°
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 32° to 66°, with overnight lows between 22° and 45°. The average high for April is 51° with an average low of 32°. 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.