S
M
T
W
T
F
S
26
63°
43°
27
75°
38°
28
74°
52°
29
57°
45°
30
52°
35°
1
45°
33°
2
43°
35°
3
60°
27°
4
73°
47°
5
72°
53°
6
56°
45°
7
59°
33°
8
60°
38°
9
69°
48°
10
62°
40°
11
61°
33°
12
67°
32°
13
68°
45°
14
54°
43°
15
66°
38°
16
70°
46°
17
85°
54°
18
89°
59°
19
87°
66°
20
68°
49°
21
67°
48°
22
65°
49°
23
63°
51°
24
67°
53°
25
77°
55°
26
81°
50°
27
79°
55°
28
71°
42°
29
78°
46°
30
70°
46°
31
72°
46°
1
75°
49°
2
74°
48°
3
77°
51°
4
79°
58°
5
81°
59°
6
80°
58°
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 70° to 81°, with overnight lows between 42° and 59°. The average high for May is 76° with an average low of 50°. 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.