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°
21°
11
57°
40°
12
77°
47°
13
53°
40°
14
61°
38°
15
74°
36°
16
84°
44°
17
46°
23°
18
44°
27°
19
51°
29°
20
69°
38°
21
69°
48°
22
84°
58°
23
78°
41°
24
56°
34°
25
55°
33°
26
53°
34°
27
57°
37°
28
61°
37°
29
62°
38°
30
56°
41°
1
55°
38°
2
56°
39°
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 44° to 84°, with overnight lows between 23° and 58°. The average high for April is 60° with an average low of 37°. 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.
