S
M
T
W
T
F
S
26
64°
47°
27
66°
48°
28
69°
43°
29
73°
44°
30
66°
50°
1
67°
53°
2
68°
52°
3
66°
50°
4
66°
48°
5
67°
47°
6
69°
50°
7
70°
53°
8
71°
48°
9
71°
52°
10
70°
51°
11
69°
50°
12
69°
50°
13
68°
51°
14
67°
50°
15
81°
60°
16
71°
52°
17
72°
53°
18
73°
53°
19
73°
52°
20
72°
53°
21
72°
53°
22
71°
52°
23
74°
54°
24
74°
54°
25
73°
53°
26
72°
54°
27
72°
53°
28
67°
53°
29
66°
52°
30
68°
53°
31
69°
54°
1
70°
54°
2
72°
53°
3
71°
54°
4
71°
54°
5
70°
53°
6
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santa Maria
Santa Maria's May 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 47° and 60°. The average high for May is 70° 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 Santa Maria. See also: June | July | August.