S
M
T
W
T
F
S
29
69°
32°
30
76°
50°
31
79°
60°
1
86°
61°
2
83°
60°
3
82°
62°
4
84°
60°
5
72°
56°
6
64°
45°
7
74°
44°
8
66°
45°
9
71°
36°
10
78°
38°
11
85°
45°
12
86°
53°
13
80°
56°
14
86°
57°
15
88°
58°
16
87°
63°
17
89°
57°
18
89°
55°
19
70°
44°
20
75°
37°
21
76°
42°
22
84°
48°
23
86°
54°
24
86°
57°
25
86°
54°
26
81°
61°
27
73°
53°
28
67°
49°
29
84°
59°
30
77°
62°
1
69°
57°
2
66°
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.
