S
M
T
W
T
F
S
26
63°
51°
27
66°
51°
28
71°
49°
29
75°
50°
30
75°
52°
1
74°
55°
2
70°
52°
3
67°
52°
4
69°
56°
5
71°
55°
6
71°
54°
7
72°
55°
8
73°
56°
9
71°
55°
10
73°
56°
11
85°
62°
12
76°
56°
13
77°
56°
14
77°
55°
15
76°
56°
16
76°
55°
17
75°
53°
18
71°
52°
19
69°
50°
20
70°
50°
21
70°
54°
22
72°
51°
23
77°
55°
24
78°
57°
25
78°
57°
26
77°
56°
27
78°
56°
28
79°
54°
29
77°
53°
30
74°
52°
31
71°
51°
1
72°
51°
2
72°
53°
3
73°
53°
4
72°
54°
5
73°
53°
6
72°
53°
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 67° to 85°, with overnight lows between 49° and 62°. The average high for May is 74° with an average low of 54°. 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.
