S
M
T
W
T
F
S
26
64°
45°
27
66°
48°
28
54°
43°
29
66°
39°
30
72°
43°
1
59°
48°
2
61°
46°
3
61°
51°
4
64°
46°
5
62°
44°
6
58°
46°
7
59°
43°
8
59°
44°
9
59°
47°
10
61°
42°
11
62°
45°
12
61°
45°
13
62°
46°
14
61°
44°
15
60°
45°
16
59°
44°
17
60°
42°
18
62°
45°
19
61°
44°
20
61°
43°
21
62°
43°
22
62°
44°
23
63°
48°
24
63°
49°
25
64°
49°
26
62°
48°
27
63°
46°
28
63°
44°
29
64°
43°
30
64°
46°
31
67°
45°
1
65°
45°
2
68°
47°
3
69°
49°
4
67°
46°
5
67°
48°
6
70°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Llanwern
Llanwern's May 2026 forecast shows daily high temperatures ranging from 58° to 70°, with overnight lows between 42° and 51°. The average high for May is 63° 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 Llanwern. See also: June | July | August.
