S
M
T
W
T
F
S
26
64°
45°
27
64°
46°
28
55°
46°
29
66°
45°
30
72°
48°
1
59°
48°
2
61°
46°
3
61°
50°
4
61°
46°
5
60°
42°
6
56°
43°
7
58°
43°
8
62°
45°
9
60°
48°
10
59°
46°
11
58°
44°
12
59°
43°
13
59°
44°
14
60°
45°
15
60°
44°
16
59°
45°
17
59°
42°
18
60°
45°
19
59°
44°
20
59°
43°
21
60°
44°
22
60°
44°
23
61°
48°
24
61°
49°
25
62°
49°
26
61°
48°
27
61°
47°
28
62°
45°
29
61°
44°
30
62°
46°
31
65°
45°
1
63°
46°
2
65°
48°
3
67°
50°
4
65°
47°
5
65°
48°
6
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Llanhilleth
Llanhilleth's May 2026 forecast shows daily high temperatures ranging from 56° to 68°, with overnight lows between 42° and 51°. The average high for May is 61° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Llanhilleth. See also: June | July | August.
