S
M
T
W
T
F
S
26
54°
29°
27
45°
25°
28
46°
29°
29
48°
25°
30
41°
27°
1
54°
23°
2
63°
24°
3
64°
31°
4
62°
31°
5
37°
25°
6
35°
19°
7
58°
33°
8
62°
36°
9
67°
37°
10
62°
30°
11
76°
36°
12
73°
37°
13
82°
40°
14
69°
44°
15
71°
43°
16
63°
39°
17
54°
26°
18
36°
21°
19
43°
27°
20
53°
30°
21
53°
31°
22
60°
36°
23
61°
38°
24
59°
38°
25
63°
37°
26
64°
40°
27
61°
35°
28
56°
33°
29
55°
32°
30
57°
35°
31
63°
41°
1
59°
40°
2
66°
40°
3
67°
42°
4
69°
44°
5
68°
43°
6
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Livermore
Livermore's May 2026 forecast shows daily high temperatures ranging from 36° to 71°, with overnight lows between 21° and 44°. The average high for May is 60° with an average low of 37°. 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 Livermore. See also: June | July | August.