S
M
T
W
T
F
S
26
55°
48°
27
59°
45°
28
57°
46°
29
64°
45°
30
73°
48°
1
64°
50°
2
57°
50°
3
59°
50°
4
57°
45°
5
55°
41°
6
57°
41°
7
55°
43°
8
59°
48°
9
55°
46°
10
50°
46°
11
54°
43°
12
57°
43°
13
55°
48°
14
54°
45°
15
54°
48°
16
54°
45°
17
55°
46°
18
52°
48°
19
55°
49°
20
57°
52°
21
61°
53°
22
67°
52°
23
64°
49°
24
69°
52°
25
73°
51°
26
70°
52°
27
69°
52°
28
65°
51°
29
64°
49°
30
60°
48°
31
58°
49°
1
58°
48°
2
59°
46°
3
58°
50°
4
59°
51°
5
61°
52°
6
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Trefriw
Trefriw's May 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 46° and 53°. The average high for May is 62° with an average low of 50°. 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 Trefriw. See also: June | July | August.
