S
M
T
W
T
F
S
26
63°
51°
27
66°
51°
28
71°
46°
29
74°
48°
30
71°
53°
1
71°
55°
2
67°
55°
3
66°
54°
4
66°
48°
5
63°
54°
6
73°
55°
7
70°
55°
8
68°
54°
9
72°
52°
10
73°
54°
11
83°
53°
12
69°
55°
13
71°
54°
14
77°
51°
15
77°
52°
16
72°
54°
17
76°
51°
18
82°
62°
19
87°
53°
20
87°
57°
21
85°
55°
22
79°
51°
23
78°
55°
24
73°
54°
25
70°
53°
26
69°
53°
27
79°
54°
28
82°
54°
29
76°
55°
30
76°
53°
31
77°
54°
1
81°
57°
2
83°
58°
3
82°
59°
4
80°
59°
5
82°
60°
6
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Jose
San Jose's May 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 53° and 60°. The average high for May is 78° with an average low of 56°. 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 San Jose. See also: June | July | August.
