S
M
T
W
T
F
S
26
85°
59°
27
86°
61°
28
75°
65°
29
81°
62°
30
69°
55°
1
69°
48°
2
70°
48°
3
70°
42°
4
82°
46°
5
79°
56°
6
74°
57°
7
72°
52°
8
73°
48°
9
78°
54°
10
83°
56°
11
78°
54°
12
80°
52°
13
84°
57°
14
76°
49°
15
82°
46°
16
86°
59°
17
92°
58°
18
91°
62°
19
92°
71°
20
91°
69°
21
78°
69°
22
76°
69°
23
82°
67°
24
76°
69°
25
78°
68°
26
78°
69°
27
84°
68°
28
82°
69°
29
78°
67°
30
78°
62°
31
79°
59°
1
78°
61°
2
78°
63°
3
80°
64°
4
81°
64°
5
84°
63°
6
80°
64°
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 76° to 84°, with overnight lows between 59° and 69°. The average high for May is 80° with an average low of 65°. 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.