S
M
T
W
T
F
S
26
51°
41°
27
53°
41°
28
57°
39°
29
50°
28°
30
48°
23°
1
53°
26°
2
64°
26°
3
69°
41°
4
61°
42°
5
48°
32°
6
43°
35°
7
55°
31°
8
68°
27°
9
59°
34°
10
56°
32°
11
63°
26°
12
70°
48°
13
70°
38°
14
76°
44°
15
85°
55°
16
77°
45°
17
64°
46°
18
58°
47°
19
53°
41°
20
61°
33°
21
66°
31°
22
64°
43°
23
69°
46°
24
81°
39°
25
85°
52°
26
90°
58°
27
86°
53°
28
83°
52°
29
87°
60°
30
82°
54°
31
81°
54°
1
85°
51°
2
85°
56°
3
84°
61°
4
79°
59°
5
76°
55°
6
73°
54°
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 87°, with overnight lows between 51° and 61°. The average high for May is 81° with an average low of 56°. 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.