S
M
T
W
T
F
S
26
63°
51°
27
69°
45°
28
71°
40°
29
74°
52°
30
72°
52°
1
62°
46°
2
54°
48°
3
66°
42°
4
79°
42°
5
81°
55°
6
82°
58°
7
70°
52°
8
72°
46°
9
76°
48°
10
85°
58°
11
69°
45°
12
73°
40°
13
79°
44°
14
75°
53°
15
75°
47°
16
86°
49°
17
93°
62°
18
95°
67°
19
95°
67°
20
93°
66°
21
93°
64°
22
68°
59°
23
71°
58°
24
85°
63°
25
80°
71°
26
90°
70°
27
87°
70°
28
87°
58°
29
83°
66°
30
83°
53°
31
75°
57°
1
82°
58°
2
80°
54°
3
79°
57°
4
82°
61°
5
83°
63°
6
83°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oakland
Oakland's May 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 53° and 66°. The average high for May is 82° with an average low of 59°. 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 Oakland. See also: June | July | August.