S
M
T
W
T
F
S
29
45°
23°
30
60°
38°
31
41°
31°
1
N/A
2
51°
36°
3
65°
32°
4
51°
44°
5
49°
30°
6
42°
20°
7
35°
18°
8
41°
35°
9
54°
34°
10
57°
40°
11
62°
37°
12
53°
35°
13
53°
37°
14
59°
30°
15
53°
32°
16
51°
24°
17
45°
24°
18
46°
25°
19
48°
29°
20
58°
39°
21
61°
38°
22
59°
38°
23
51°
37°
24
62°
40°
25
63°
40°
26
55°
39°
27
52°
38°
28
53°
37°
29
52°
39°
30
54°
38°
1
53°
35°
2
55°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Waterloo
Waterloo's April 2026 forecast shows daily high temperatures ranging from 35° to 65°, with overnight lows between 18° and 44°. The average high for April is 53° with an average low of 34°. 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.
