S
M
T
W
T
F
S
26
62°
41°
27
69°
41°
28
65°
40°
29
62°
43°
30
54°
44°
1
63°
43°
2
54°
46°
3
54°
38°
4
70°
40°
5
80°
49°
6
70°
50°
7
65°
40°
8
62°
40°
9
55°
47°
10
71°
49°
11
60°
44°
12
61°
43°
13
59°
46°
14
66°
45°
15
64°
50°
16
66°
48°
17
67°
50°
18
63°
49°
19
67°
48°
20
65°
45°
21
66°
46°
22
66°
46°
23
67°
47°
24
67°
53°
25
68°
54°
26
74°
54°
27
73°
51°
28
70°
48°
29
68°
50°
30
70°
53°
31
76°
56°
1
73°
56°
2
70°
55°
3
72°
56°
4
76°
57°
5
75°
57°
6
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Berkeley
Berkeley's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 40° and 58°. The average high for May is 68° 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 Berkeley. See also: June | July | August.