S
M
T
W
T
F
S
26
82°
61°
27
84°
68°
28
77°
66°
29
75°
61°
30
68°
52°
1
66°
50°
2
69°
44°
3
70°
52°
4
77°
59°
5
80°
70°
6
72°
48°
7
69°
49°
8
73°
53°
9
76°
55°
10
77°
57°
11
79°
60°
12
80°
58°
13
79°
58°
14
81°
57°
15
82°
62°
16
82°
62°
17
83°
61°
18
83°
62°
19
82°
63°
20
83°
63°
21
84°
62°
22
81°
63°
23
78°
63°
24
81°
62°
25
81°
64°
26
80°
64°
27
78°
59°
28
79°
60°
29
83°
63°
30
82°
61°
31
84°
65°
1
83°
65°
2
86°
64°
3
86°
66°
4
85°
65°
5
80°
61°
6
80°
61°
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 66° to 86°, with overnight lows between 44° and 70°. The average high for May is 79° with an average low of 60°. 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.