S
M
T
W
T
F
S
26
81°
49°
27
83°
53°
28
81°
53°
29
76°
60°
30
71°
58°
31
78°
63°
1
82°
64°
2
82°
66°
3
81°
64°
4
85°
64°
5
83°
64°
6
84°
64°
7
83°
65°
8
85°
60°
9
82°
64°
10
81°
63°
11
79°
64°
12
78°
64°
13
80°
63°
14
79°
63°
15
81°
62°
16
81°
62°
17
80°
61°
18
79°
62°
19
79°
62°
20
80°
61°
21
80°
61°
22
78°
62°
23
79°
61°
24
77°
57°
25
73°
56°
26
73°
60°
27
74°
61°
28
79°
61°
29
78°
60°
30
79°
59°
31
73°
55°
1
71°
56°
2
71°
56°
3
70°
54°
4
70°
54°
5
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Calais
Calais's August 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 49° and 66°. The average high for August is 78° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Calais. See also: September | October | November.
