S
M
T
W
T
F
S
26
75°
65°
27
78°
45°
28
64°
43°
29
65°
44°
30
68°
46°
1
64°
41°
2
68°
46°
3
73°
48°
4
70°
45°
5
63°
45°
6
72°
51°
7
70°
50°
8
75°
51°
9
71°
50°
10
66°
49°
11
67°
56°
12
71°
48°
13
67°
47°
14
68°
47°
15
68°
48°
16
70°
53°
17
77°
57°
18
79°
59°
19
79°
59°
20
78°
60°
21
80°
59°
22
79°
59°
23
80°
60°
24
78°
61°
25
78°
58°
26
79°
57°
27
81°
59°
28
82°
61°
29
82°
62°
30
83°
62°
31
83°
61°
1
84°
63°
2
85°
64°
3
85°
64°
4
84°
63°
5
84°
64°
6
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Atherton
Atherton's May 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 41° and 65°. 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 Atherton. See also: June | July | August.
