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
61°
48°
11
59°
56°
12
61°
52°
13
68°
51°
14
73°
54°
15
72°
57°
16
71°
57°
17
69°
58°
18
70°
56°
19
72°
59°
20
72°
58°
21
69°
57°
22
70°
56°
23
64°
55°
24
65°
55°
25
69°
54°
26
67°
55°
27
66°
55°
28
65°
53°
29
65°
53°
30
66°
54°
1
67°
55°
2
66°
53°
3
71°
56°
4
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Llantrisant
Llantrisant's June 2026 forecast shows daily high temperatures ranging from 59° to 73°, with overnight lows between 48° and 59°. The average high for June is 68° with an average low of 55°. 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 Llantrisant. See also: July | August | September.
