S
M
T
W
T
F
S
29
46°
21°
30
61°
43°
31
64°
39°
1
64°
41°
2
43°
37°
3
66°
39°
4
61°
39°
5
61°
39°
6
52°
32°
7
46°
30°
8
37°
28°
9
54°
25°
10
66°
34°
11
59°
43°
12
50°
39°
13
64°
45°
14
79°
55°
15
73°
45°
16
59°
46°
17
63°
43°
18
48°
43°
19
52°
36°
20
50°
32°
21
43°
36°
22
46°
40°
23
60°
37°
24
53°
37°
25
47°
39°
26
54°
40°
27
55°
37°
28
52°
41°
29
51°
41°
30
54°
44°
1
55°
44°
2
55°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Cohasset
Cohasset's April 2026 forecast shows daily high temperatures ranging from 46° to 60°, with overnight lows between 37° and 44°. The average high for April is 53° 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 Cohasset. See also: May | June | July.