S
M
T
W
T
F
S
28
75°
56°
29
76°
55°
30
70°
54°
1
66°
51°
2
70°
47°
3
68°
49°
4
66°
50°
5
68°
44°
6
74°
50°
7
82°
56°
8
68°
45°
9
69°
44°
10
70°
45°
11
68°
44°
12
72°
46°
13
74°
49°
14
77°
53°
15
82°
55°
16
75°
50°
17
82°
58°
18
83°
60°
19
72°
52°
20
74°
53°
21
72°
52°
22
74°
53°
23
75°
54°
24
76°
55°
25
76°
55°
26
75°
54°
27
71°
52°
28
72°
53°
29
67°
52°
30
67°
50°
31
68°
52°
1
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Calais
Calais's July 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 44° and 60°. The average high for July is 73° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Calais. See also: August | September | October.