S
M
T
W
T
F
S
29
76°
47°
30
89°
46°
31
74°
45°
1
48°
35°
2
47°
39°
3
41°
37°
4
49°
35°
5
66°
33°
6
51°
34°
7
49°
31°
8
69°
46°
9
48°
38°
10
55°
34°
11
68°
46°
12
76°
61°
13
87°
60°
14
82°
50°
15
71°
51°
16
86°
49°
17
73°
39°
18
56°
32°
19
64°
37°
20
82°
37°
21
86°
37°
22
81°
57°
23
79°
52°
24
66°
41°
25
67°
47°
26
70°
45°
27
62°
46°
28
54°
41°
29
62°
37°
30
58°
43°
1
59°
40°
2
68°
33°
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.
