S
M
T
W
T
F
S
26
65°
46°
27
67°
46°
28
70°
42°
29
70°
47°
30
67°
51°
1
69°
51°
2
69°
51°
3
65°
49°
4
66°
48°
5
66°
48°
6
67°
51°
7
67°
54°
8
65°
54°
9
67°
51°
10
66°
52°
11
67°
50°
12
68°
52°
13
67°
51°
14
68°
55°
15
65°
50°
16
66°
52°
17
65°
51°
18
66°
52°
19
66°
50°
20
68°
53°
21
72°
55°
22
73°
55°
23
73°
54°
24
72°
55°
25
72°
55°
26
71°
54°
27
71°
53°
28
69°
54°
29
68°
53°
30
66°
51°
31
66°
52°
1
67°
53°
2
69°
55°
3
72°
55°
4
72°
54°
5
71°
55°
6
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lompoc
Lompoc's May 2026 forecast shows daily high temperatures ranging from 65° to 73°, with overnight lows between 48° and 55°. The average high for May is 68° with an average low of 53°. 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 Lompoc. See also: June | July | August.