S
M
T
W
T
F
S
29
53°
41°
30
58°
38°
31
58°
44°
1
55°
41°
2
58°
37°
3
62°
31°
4
72°
38°
5
77°
44°
6
79°
45°
7
62°
39°
8
70°
38°
9
75°
41°
10
73°
50°
11
63°
46°
12
56°
44°
13
57°
45°
14
50°
42°
15
52°
36°
16
57°
35°
17
59°
36°
18
71°
36°
19
75°
45°
20
65°
49°
21
60°
48°
22
54°
47°
23
58°
45°
24
67°
40°
25
68°
37°
26
69°
37°
27
59°
38°
28
61°
44°
29
69°
38°
30
79°
42°
1
73°
46°
2
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Waterloo
Waterloo's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April 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 April weather will actually feel in Waterloo. See also: May | June | July.
