S
M
T
W
T
F
S
26
67°
40°
27
75°
39°
28
70°
49°
29
68°
48°
30
59°
46°
1
61°
41°
2
56°
37°
3
52°
41°
4
65°
49°
5
74°
55°
6
60°
40°
7
54°
36°
8
49°
35°
9
50°
38°
10
54°
43°
11
56°
39°
12
57°
43°
13
58°
42°
14
57°
46°
15
60°
45°
16
59°
43°
17
66°
49°
18
68°
48°
19
66°
47°
20
64°
48°
21
67°
47°
22
67°
49°
23
60°
40°
24
59°
42°
25
60°
42°
26
61°
45°
27
62°
42°
28
61°
42°
29
61°
43°
30
62°
43°
31
63°
51°
1
64°
45°
2
65°
44°
3
64°
49°
4
67°
51°
5
65°
47°
6
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Berne
Berne's May 2026 forecast shows daily high temperatures ranging from 49° to 74°, with overnight lows between 35° and 55°. The average high for May is 61° with an average low of 45°. 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 Berne. See also: June | July | August.