S
M
T
W
T
F
S
29
70°
35°
30
68°
36°
31
41°
27°
1
37°
25°
2
32°
29°
3
31°
28°
4
37°
29°
5
56°
28°
6
33°
14°
7
41°
14°
8
54°
31°
9
40°
28°
10
54°
38°
11
55°
53°
12
76°
44°
13
69°
46°
14
61°
40°
15
69°
45°
16
63°
25°
17
50°
31°
18
54°
37°
19
58°
43°
20
65°
43°
21
64°
38°
22
54°
33°
23
71°
47°
24
51°
39°
25
52°
35°
26
53°
38°
27
54°
41°
28
53°
43°
29
63°
42°
30
65°
41°
1
53°
39°
2
53°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Watertown
Watertown's April 2026 forecast shows daily high temperatures ranging from 50° to 76°, with overnight lows between 25° and 53°. The average high for April is 59° with an average low of 40°. 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 Watertown. See also: May | June | July.
