S
M
T
W
T
F
S
28
76°
74°
29
77°
73°
30
76°
74°
1
76°
74°
2
77°
73°
3
76°
74°
4
77°
73°
5
76°
74°
6
76°
74°
7
77°
73°
8
76°
74°
9
76°
74°
10
76°
73°
11
76°
74°
12
78°
74°
13
77°
73°
14
77°
74°
15
78°
74°
16
77°
73°
17
77°
74°
18
78°
74°
19
78°
73°
20
80°
74°
21
80°
74°
22
82°
73°
23
83°
73°
24
81°
72°
25
80°
74°
26
82°
74°
27
82°
73°
28
81°
73°
29
81°
72°
30
80°
75°
31
82°
75°
1
82°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
Diy-December Weather in Santa Maria
Santa Maria's Diy-December 2026 forecast shows daily high temperatures ranging from 76° to 83°, with overnight lows between 72° and 75°. The average high for Diy-December is 78° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how Diy-December weather will actually feel in Santa Maria. See also: August | September | October.