S
M
T
W
T
F
S
26
65°
49°
27
63°
48°
28
64°
46°
29
62°
46°
30
63°
47°
1
63°
43°
2
64°
44°
3
63°
45°
4
62°
43°
5
62°
43°
6
64°
44°
7
66°
50°
8
73°
48°
9
68°
53°
10
65°
46°
11
66°
45°
12
63°
44°
13
63°
46°
14
65°
45°
15
66°
47°
16
65°
46°
17
67°
53°
18
73°
48°
19
68°
47°
20
68°
47°
21
69°
54°
22
68°
54°
23
70°
57°
24
78°
58°
25
78°
58°
26
77°
57°
27
79°
60°
28
80°
58°
29
81°
58°
30
82°
57°
31
79°
54°
1
73°
53°
2
72°
55°
3
74°
60°
4
74°
60°
5
75°
59°
6
76°
60°
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 62° to 82°, with overnight lows between 43° and 60°. The average high for May is 69° with an average low of 51°. 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.