S
M
T
W
T
F
S
26
88°
77°
27
89°
78°
28
90°
79°
29
89°
78°
30
90°
79°
1
82°
79°
2
82°
78°
3
82°
77°
4
82°
78°
5
82°
78°
6
82°
77°
7
82°
78°
8
83°
78°
9
82°
77°
10
82°
79°
11
83°
78°
12
82°
78°
13
82°
80°
14
83°
80°
15
82°
79°
16
83°
78°
17
82°
79°
18
82°
79°
19
83°
78°
20
82°
79°
21
82°
80°
22
83°
80°
23
82°
79°
24
82°
80°
25
82°
80°
26
83°
79°
27
84°
80°
28
82°
80°
29
82°
79°
30
83°
79°
31
82°
80°
1
86°
78°
2
85°
78°
3
85°
77°
4
86°
78°
5
85°
78°
6
85°
77°
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 82° to 90°, with overnight lows between 77° and 80°. The average high for May is 84° with an average low of 79°. 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.