S
M
T
W
T
F
S
26
79°
54°
27
77°
55°
28
70°
59°
29
70°
57°
30
64°
55°
1
66°
50°
2
71°
52°
3
72°
53°
4
62°
50°
5
62°
49°
6
58°
45°
7
69°
52°
8
59°
51°
9
62°
50°
10
63°
48°
11
63°
49°
12
63°
48°
13
64°
46°
14
63°
47°
15
61°
42°
16
63°
46°
17
62°
45°
18
63°
45°
19
63°
46°
20
62°
45°
21
63°
45°
22
63°
46°
23
64°
46°
24
64°
47°
25
65°
47°
26
66°
48°
27
69°
47°
28
71°
48°
29
69°
51°
30
71°
49°
31
72°
52°
1
72°
52°
2
71°
51°
3
73°
53°
4
71°
55°
5
70°
54°
6
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Biella
Biella's May 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 42° and 55°. The average high for May is 66° with an average low of 49°. 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 Biella. See also: June | July | August.