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
72°
51°
9
75°
55°
10
78°
55°
11
85°
58°
12
82°
56°
13
78°
57°
14
80°
56°
15
74°
54°
16
73°
55°
17
75°
54°
18
76°
56°
19
74°
57°
20
75°
56°
21
84°
61°
22
70°
51°
23
71°
51°
24
72°
52°
25
71°
52°
26
71°
50°
27
74°
50°
28
71°
51°
29
77°
55°
30
79°
57°
31
79°
57°
1
78°
56°
2
78°
58°
3
74°
57°
4
73°
58°
5
72°
56°
6
73°
54°
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 70° to 85°, with overnight lows between 50° and 61°. The average high for May is 75° with an average low of 55°. 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.
