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
75°
50°
16
69°
55°
17
68°
48°
18
52°
47°
19
64°
39°
20
47°
30°
21
49°
40°
22
58°
42°
23
59°
40°
24
55°
40°
25
55°
43°
26
57°
43°
27
54°
44°
28
57°
41°
29
55°
42°
30
56°
43°
1
57°
45°
2
58°
42°
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 47° to 75°, with overnight lows between 30° and 55°. The average high for April is 58° with an average low of 43°. 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.