S
M
T
W
T
F
S
26
88°
71°
27
90°
71°
28
90°
70°
29
90°
69°
30
78°
67°
1
67°
54°
2
73°
53°
3
80°
47°
4
81°
52°
5
85°
58°
6
89°
71°
7
80°
65°
8
77°
65°
9
71°
65°
10
85°
66°
11
80°
66°
12
85°
67°
13
88°
64°
14
90°
62°
15
89°
65°
16
89°
69°
17
92°
71°
18
92°
72°
19
90°
75°
20
86°
71°
21
85°
71°
22
91°
71°
23
83°
71°
24
77°
70°
25
81°
70°
26
82°
72°
27
84°
73°
28
83°
72°
29
87°
71°
30
85°
70°
31
86°
69°
1
84°
67°
2
87°
71°
3
85°
70°
4
85°
68°
5
88°
70°
6
85°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Palo Alto
Palo Alto's May 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 67° and 73°. The average high for May is 84° 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 Palo Alto. See also: June | July | August.
