S
M
T
W
T
F
S
31
65°
57°
1
66°
55°
2
64°
56°
3
66°
56°
4
62°
54°
5
60°
52°
6
61°
54°
7
64°
55°
8
61°
51°
9
60°
51°
10
60°
50°
11
60°
54°
12
64°
58°
13
63°
53°
14
70°
50°
15
73°
57°
16
67°
58°
17
64°
61°
18
73°
61°
19
73°
60°
20
69°
56°
21
78°
64°
22
82°
66°
23
77°
63°
24
82°
66°
25
87°
65°
26
87°
67°
27
78°
61°
28
74°
61°
29
74°
58°
30
72°
58°
1
71°
57°
2
64°
50°
3
65°
49°
4
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Llantwit Major
Llantwit Major's June 2026 forecast shows daily high temperatures ranging from 64° to 87°, with overnight lows between 49° and 67°. The average high for June is 75° with an average low of 59°. 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 Llantwit Major. See also: July | August | September.