S
M
T
W
T
F
S
26
76°
68°
27
77°
68°
28
77°
68°
29
78°
69°
30
77°
68°
1
77°
69°
2
77°
68°
3
78°
69°
4
74°
70°
5
74°
70°
6
75°
71°
7
74°
71°
8
74°
70°
9
75°
71°
10
74°
71°
11
74°
70°
12
75°
71°
13
74°
71°
14
74°
70°
15
73°
71°
16
75°
71°
17
74°
72°
18
74°
71°
19
73°
72°
20
73°
71°
21
74°
71°
22
73°
72°
23
73°
72°
24
74°
71°
25
74°
72°
26
73°
72°
27
73°
71°
28
74°
72°
29
74°
72°
30
74°
71°
31
75°
71°
1
77°
71°
2
78°
71°
3
78°
70°
4
77°
71°
5
78°
72°
6
78°
72°
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 73° to 78°, with overnight lows between 68° and 72°. The average high for May is 75° with an average low of 71°. 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.