S
M
T
W
T
F
S
26
64°
49°
27
58°
48°
28
63°
46°
29
70°
49°
30
65°
50°
1
59°
54°
2
57°
51°
3
61°
49°
4
69°
46°
5
73°
60°
6
76°
64°
7
69°
52°
8
63°
52°
9
74°
56°
10
77°
64°
11
69°
52°
12
66°
51°
13
72°
52°
14
67°
57°
15
70°
55°
16
75°
61°
17
83°
65°
18
84°
69°
19
80°
70°
20
86°
70°
21
81°
71°
22
70°
62°
23
79°
66°
24
78°
70°
25
80°
71°
26
83°
74°
27
85°
71°
28
80°
63°
29
71°
66°
30
77°
58°
31
66°
60°
1
74°
61°
2
68°
58°
3
73°
61°
4
75°
65°
5
80°
68°
6
78°
71°
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 80°, with overnight lows between 58° and 71°. The average high for May is 74° with an average low of 63°. 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.
