S
M
T
W
T
F
S
26
81°
72°
27
82°
71°
28
79°
72°
29
80°
71°
30
80°
70°
1
80°
71°
2
81°
71°
3
80°
72°
4
80°
72°
5
81°
71°
6
80°
72°
7
80°
70°
8
81°
71°
9
81°
72°
10
82°
72°
11
81°
70°
12
81°
71°
13
82°
70°
14
81°
70°
15
81°
69°
16
82°
70°
17
82°
70°
18
84°
68°
19
84°
67°
20
85°
67°
21
83°
66°
22
84°
69°
23
86°
69°
24
84°
68°
25
84°
68°
26
85°
69°
27
85°
69°
28
86°
68°
29
86°
69°
30
87°
68°
31
88°
69°
1
89°
68°
2
87°
69°
3
90°
69°
4
89°
68°
5
88°
69°
6
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cali
Cali's May 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 66° and 72°. The average high for May is 83° with an average low of 70°. 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 Cali. See also: June | July | August.