S
M
T
W
T
F
S
29
67°
53°
30
68°
57°
1
73°
56°
2
76°
49°
3
74°
48°
4
67°
49°
5
67°
48°
6
66°
47°
7
65°
46°
8
64°
47°
9
65°
48°
10
66°
54°
11
71°
54°
12
73°
52°
13
Hist. Avg.
69°
52°
14
Hist. Avg.
69°
52°
15
Hist. Avg.
69°
52°
16
Hist. Avg.
69°
51°
17
Hist. Avg.
68°
51°
18
Hist. Avg.
68°
51°
19
Hist. Avg.
68°
51°
20
Hist. Avg.
68°
50°
21
Hist. Avg.
68°
50°
22
Hist. Avg.
68°
50°
23
Hist. Avg.
68°
50°
24
Hist. Avg.
68°
50°
25
Hist. Avg.
68°
50°
26
Hist. Avg.
68°
49°
27
Hist. Avg.
68°
49°
28
Hist. Avg.
67°
49°
29
Hist. Avg.
67°
49°
30
Hist. Avg.
67°
49°
31
Hist. Avg.
67°
49°
1
Hist. Avg.
67°
48°
2
Hist. Avg.
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in St. Augustine Beach
St. Augustine Beach's December 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 46° and 57°. The average high for December is 69° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in St. Augustine Beach. See also: January | February | March.
