S
M
T
W
T
F
S
26
70°
37°
27
73°
36°
28
66°
41°
29
66°
46°
30
68°
37°
1
73°
34°
2
77°
43°
3
70°
46°
4
66°
45°
5
59°
45°
6
55°
43°
7
64°
45°
8
72°
39°
9
73°
48°
10
66°
48°
11
59°
45°
12
57°
39°
13
61°
36°
14
54°
39°
15
52°
39°
16
54°
37°
17
61°
34°
18
55°
39°
19
63°
48°
20
71°
43°
21
76°
44°
22
81°
48°
23
84°
51°
24
80°
51°
25
76°
51°
26
80°
53°
27
80°
53°
28
83°
54°
29
82°
53°
30
78°
54°
31
68°
46°
1
66°
45°
2
66°
44°
3
67°
43°
4
68°
44°
5
69°
46°
6
76°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bern
Bern's May 2026 forecast shows daily high temperatures ranging from 55° to 84°, with overnight lows between 39° and 54°. The average high for May is 73° with an average low of 48°. 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 Bern. See also: June | July | August.