S
M
T
W
T
F
S
31
68°
45°
1
66°
45°
2
68°
44°
3
70°
46°
4
70°
47°
5
69°
47°
6
65°
46°
7
63°
47°
8
64°
48°
9
65°
43°
10
64°
42°
11
64°
46°
12
65°
47°
13
65°
46°
14
66°
49°
15
65°
48°
16
66°
47°
17
68°
50°
18
70°
51°
19
67°
51°
20
69°
50°
21
72°
51°
22
77°
51°
23
71°
49°
24
74°
45°
25
71°
48°
26
73°
49°
27
71°
46°
28
71°
47°
29
74°
50°
30
77°
47°
1
70°
49°
2
72°
51°
3
76°
54°
4
77°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Cos Jacket
Cos Jacket's June 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 42° and 54°. The average high for June is 69° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Cos Jacket. See also: July | August | September.