S
M
T
W
T
F
S
29
48°
23°
30
66°
39°
31
59°
37°
1
44°
32°
2
42°
36°
3
65°
37°
4
57°
45°
5
52°
32°
6
40°
22°
7
36°
18°
8
40°
30°
9
53°
38°
10
55°
42°
11
62°
40°
12
52°
36°
13
55°
39°
14
57°
42°
15
55°
35°
16
54°
27°
17
46°
27°
18
47°
28°
19
49°
30°
20
59°
41°
21
62°
41°
22
61°
40°
23
52°
41°
24
63°
42°
25
65°
42°
26
61°
41°
27
54°
39°
28
54°
38°
29
53°
39°
30
58°
40°
1
55°
37°
2
57°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Cornwall
Cornwall's April 2026 forecast shows daily high temperatures ranging from 36° to 65°, with overnight lows between 18° and 45°. The average high for April is 54° with an average low of 36°. 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 Cornwall. See also: May | June | July.
