S
M
T
W
T
F
S
29
90°
59°
30
83°
57°
31
71°
59°
1
66°
56°
2
68°
49°
3
75°
51°
4
76°
45°
5
84°
55°
6
78°
53°
7
77°
53°
8
81°
58°
9
76°
56°
10
71°
55°
11
73°
53°
12
70°
49°
13
71°
48°
14
72°
51°
15
74°
52°
16
75°
53°
17
74°
53°
18
72°
51°
19
71°
46°
20
70°
52°
21
73°
47°
22
68°
52°
23
68°
53°
24
68°
54°
25
69°
52°
26
70°
52°
27
74°
51°
28
73°
53°
29
71°
51°
30
77°
52°
1
77°
54°
2
73°
54°
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 68° to 84°, with overnight lows between 46° and 58°. The average high for April is 73° with an average low of 52°. 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.
