S
M
T
W
T
F
S
28
76°
54°
29
84°
51°
30
86°
55°
1
81°
58°
2
94°
58°
3
94°
64°
4
87°
56°
5
83°
52°
6
81°
49°
7
80°
49°
8
81°
52°
9
89°
52°
10
83°
58°
11
79°
55°
12
82°
52°
13
85°
50°
14
84°
62°
15
85°
53°
16
80°
47°
17
78°
47°
18
73°
46°
19
73°
57°
20
78°
52°
21
79°
50°
22
72°
60°
23
77°
49°
24
83°
50°
25
84°
51°
26
82°
54°
27
79°
57°
28
83°
64°
29
77°
63°
30
79°
64°
31
81°
63°
1
80°
63°
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 77° to 84°, with overnight lows between 49° and 64°. The average high for July is 81° with an average low of 58°. 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.