S
M
T
W
T
F
S
29
72°
57°
30
81°
52°
31
84°
55°
1
84°
54°
2
84°
55°
3
86°
61°
4
84°
63°
5
84°
59°
6
68°
55°
7
63°
52°
8
68°
52°
9
72°
55°
10
81°
53°
11
84°
51°
12
86°
54°
13
86°
55°
14
89°
58°
15
84°
57°
16
86°
59°
17
87°
58°
18
88°
61°
19
89°
62°
20
86°
61°
21
85°
61°
22
85°
62°
23
86°
56°
24
83°
60°
25
83°
61°
26
82°
61°
27
81°
60°
28
83°
61°
29
80°
60°
30
80°
60°
1
81°
60°
2
83°
61°
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 80° to 89°, with overnight lows between 51° and 62°. The average high for April is 84° with an average low of 59°. 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.
