S
M
T
W
T
F
S
26
61°
44°
27
66°
45°
28
64°
49°
29
55°
41°
30
53°
36°
1
48°
37°
2
58°
34°
3
67°
46°
4
77°
49°
5
57°
43°
6
54°
37°
7
58°
35°
8
68°
36°
9
68°
47°
10
62°
38°
11
58°
38°
12
72°
38°
13
62°
47°
14
72°
41°
15
80°
59°
16
83°
59°
17
73°
54°
18
82°
58°
19
73°
54°
20
59°
46°
21
54°
44°
22
63°
46°
23
79°
52°
24
82°
54°
25
84°
59°
26
84°
63°
27
84°
60°
28
75°
54°
29
82°
53°
30
73°
51°
31
76°
54°
1
78°
49°
2
80°
52°
3
84°
59°
4
84°
63°
5
83°
60°
6
78°
57°
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 73° to 84°, with overnight lows between 49° and 63°. The average high for May is 80° with an average low of 55°. 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.