S
M
T
W
T
F
S
26
62°
51°
27
66°
45°
28
73°
44°
29
78°
46°
30
77°
48°
1
78°
51°
2
69°
51°
3
68°
51°
4
67°
52°
5
66°
51°
6
74°
53°
7
76°
52°
8
75°
53°
9
79°
52°
10
82°
52°
11
83°
51°
12
84°
54°
13
84°
54°
14
75°
48°
15
71°
50°
16
70°
49°
17
71°
48°
18
70°
51°
19
70°
47°
20
73°
49°
21
76°
51°
22
78°
52°
23
80°
55°
24
81°
55°
25
80°
54°
26
78°
53°
27
75°
52°
28
73°
51°
29
72°
50°
30
73°
51°
31
73°
50°
1
74°
50°
2
74°
51°
3
76°
53°
4
80°
55°
5
78°
52°
6
76°
52°
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 66° to 84°, with overnight lows between 47° and 55°. The average high for May is 75° with an average low of 52°. 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.