S
M
T
W
T
F
S
30
52°
40°
1
55°
46°
2
51°
44°
3
53°
36°
4
49°
41°
5
55°
41°
6
54°
49°
7
56°
51°
8
56°
52°
9
59°
53°
10
55°
50°
11
56°
51°
12
54°
37°
13
53°
36°
14
54°
51°
15
53°
47°
16
51°
35°
17
54°
34°
18
53°
47°
19
52°
46°
20
51°
45°
21
50°
39°
22
52°
47°
23
51°
43°
24
46°
34°
25
42°
31°
26
44°
38°
27
46°
39°
28
47°
41°
29
44°
37°
30
46°
35°
31
46°
32°
1
47°
32°
2
46°
36°
3
44°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in St Austell
St Austell's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Austell. See also: January | February | March.
