S
M
T
W
T
F
S
26
63°
51°
27
67°
47°
28
74°
48°
29
74°
48°
30
75°
49°
1
71°
53°
2
60°
53°
3
66°
54°
4
67°
51°
5
62°
52°
6
73°
51°
7
76°
53°
8
69°
52°
9
73°
51°
10
74°
53°
11
89°
48°
12
73°
53°
13
67°
55°
14
80°
48°
15
78°
49°
16
69°
49°
17
76°
49°
18
82°
63°
19
87°
49°
20
86°
53°
21
90°
53°
22
79°
52°
23
71°
54°
24
73°
55°
25
67°
55°
26
68°
53°
27
69°
51°
28
61°
53°
29
61°
54°
30
71°
54°
31
84°
48°
1
89°
52°
2
79°
53°
3
73°
53°
4
81°
54°
5
87°
54°
6
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pleasanton
Pleasanton's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Pleasanton. See also: June | July | August.