S
M
T
W
T
F
S
26
65°
46°
27
67°
46°
28
70°
42°
29
70°
47°
30
67°
51°
1
66°
53°
2
66°
54°
3
67°
47°
4
68°
45°
5
67°
46°
6
70°
45°
7
69°
52°
8
68°
50°
9
71°
52°
10
73°
49°
11
78°
50°
12
65°
50°
13
64°
50°
14
67°
52°
15
69°
54°
16
67°
52°
17
65°
51°
18
67°
50°
19
66°
52°
20
68°
44°
21
66°
50°
22
65°
50°
23
67°
53°
24
71°
55°
25
72°
54°
26
71°
53°
27
67°
52°
28
66°
52°
29
68°
55°
30
72°
55°
31
72°
54°
1
71°
56°
2
72°
56°
3
70°
54°
4
66°
55°
5
66°
55°
6
67°
54°
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 64° to 78°, with overnight lows between 44° and 56°. The average high for May is 69° 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 Lompoc. See also: June | July | August.