S
M
T
W
T
F
S
26
67°
49°
27
78°
47°
28
75°
59°
29
65°
50°
30
59°
41°
1
57°
39°
2
56°
35°
3
63°
32°
4
77°
53°
5
71°
58°
6
61°
44°
7
61°
39°
8
71°
39°
9
75°
53°
10
72°
53°
11
71°
46°
12
75°
43°
13
71°
49°
14
66°
41°
15
69°
56°
16
76°
61°
17
90°
65°
18
90°
67°
19
79°
63°
20
77°
57°
21
70°
53°
22
72°
55°
23
72°
56°
24
78°
58°
25
78°
62°
26
80°
61°
27
79°
55°
28
79°
61°
29
79°
60°
30
78°
57°
31
73°
55°
1
73°
53°
2
74°
52°
3
74°
53°
4
75°
54°
5
82°
62°
6
84°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in California
California's May 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 41° and 67°. The average high for May is 77° with an average low of 58°. 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 California. See also: June | July | August.
