S
M
T
W
T
F
S
26
79°
41°
27
74°
41°
28
81°
44°
29
82°
45°
30
78°
51°
1
64°
49°
2
69°
46°
3
77°
37°
4
80°
52°
5
71°
47°
6
75°
39°
7
76°
45°
8
86°
54°
9
91°
58°
10
84°
53°
11
90°
59°
12
91°
61°
13
87°
57°
14
91°
56°
15
87°
54°
16
89°
54°
17
87°
53°
18
82°
57°
19
88°
51°
20
88°
52°
21
89°
52°
22
80°
51°
23
88°
53°
24
90°
53°
25
85°
52°
26
85°
53°
27
89°
53°
28
88°
54°
29
84°
54°
30
83°
53°
31
85°
54°
1
83°
51°
2
84°
54°
3
85°
54°
4
85°
51°
5
86°
55°
6
88°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bernardo
Bernardo's May 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 39° and 61°. The average high for May is 85° with an average low of 53°. 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 Bernardo. See also: June | July | August.