S
M
T
W
T
F
S
26
68°
36°
27
68°
45°
28
63°
50°
29
72°
50°
30
72°
48°
1
70°
46°
2
70°
52°
3
61°
54°
4
61°
50°
5
61°
50°
6
55°
48°
7
59°
41°
8
66°
41°
9
73°
50°
10
61°
48°
11
54°
37°
12
57°
34°
13
55°
46°
14
54°
39°
15
55°
36°
16
57°
43°
17
57°
52°
18
57°
46°
19
N/A
20
62°
52°
21
69°
57°
22
79°
62°
23
76°
60°
24
74°
59°
25
73°
60°
26
73°
59°
27
72°
58°
28
70°
57°
29
66°
55°
30
65°
54°
31
67°
55°
1
61°
49°
2
62°
48°
3
63°
51°
4
66°
55°
5
66°
55°
6
68°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Calais
Calais's May 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 48° and 62°. The average high for May is 68° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Calais. See also: June | July | August.
