S
M
T
W
T
F
S
26
60°
37°
27
55°
48°
28
56°
41°
29
66°
37°
30
72°
42°
1
61°
46°
2
71°
49°
3
85°
46°
4
66°
52°
5
61°
53°
6
56°
51°
7
61°
44°
8
60°
44°
9
71°
45°
10
61°
47°
11
72°
50°
12
71°
47°
13
57°
50°
14
58°
48°
15
53°
45°
16
55°
43°
17
64°
37°
18
64°
46°
19
63°
47°
20
64°
49°
21
73°
46°
22
65°
50°
23
61°
46°
24
68°
44°
25
56°
46°
26
64°
45°
27
67°
48°
28
72°
51°
29
60°
44°
30
63°
42°
31
67°
44°
1
78°
49°
2
76°
52°
3
72°
48°
4
69°
46°
5
66°
47°
6
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Menlo
Menlo's May 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 42° and 52°. The average high for May is 69° with an average low of 47°. 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 Menlo. See also: June | July | August.
