S
M
T
W
T
F
S
29
50°
34°
30
54°
45°
31
52°
41°
1
52°
48°
2
50°
37°
3
52°
37°
4
64°
52°
5
54°
48°
6
59°
36°
7
N/A
8
72°
50°
9
66°
45°
10
55°
47°
11
58°
44°
12
54°
44°
13
55°
45°
14
54°
46°
15
56°
48°
16
56°
47°
17
55°
45°
18
56°
45°
19
57°
46°
20
54°
42°
21
56°
45°
22
59°
47°
23
60°
48°
24
61°
48°
25
60°
47°
26
57°
46°
27
54°
45°
28
54°
44°
29
55°
42°
30
55°
48°
1
58°
49°
2
58°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Calais
Calais's April 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 42° and 50°. The average high for April is 57° with an average low of 46°. 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 Calais. See also: May | June | July.