S
M
T
W
T
F
S
29
80°
47°
30
71°
51°
31
66°
58°
1
64°
55°
2
60°
43°
3
73°
40°
4
78°
47°
5
76°
50°
6
60°
48°
7
63°
52°
8
62°
50°
9
80°
52°
10
62°
55°
11
57°
53°
12
65°
49°
13
63°
47°
14
59°
53°
15
60°
51°
16
66°
54°
17
68°
50°
18
68°
50°
19
64°
53°
20
62°
53°
21
61°
53°
22
64°
53°
23
65°
52°
24
66°
51°
25
67°
53°
26
66°
52°
27
67°
51°
28
67°
52°
29
66°
51°
30
62°
47°
1
62°
48°
2
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Westborough
Westborough's April 2026 forecast shows daily high temperatures ranging from 61° to 68°, with overnight lows between 47° and 54°. The average high for April is 65° with an average low of 51°. 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 Westborough. See also: May | June | July.