S
M
T
W
T
F
S
29
55°
30°
30
54°
25°
1
49°
24°
2
37°
24°
3
35°
25°
4
38°
34°
5
41°
33°
6
48°
26°
7
40°
25°
8
38°
30°
9
41°
28°
10
40°
26°
11
37°
25°
12
36°
23°
13
39°
22°
14
34°
21°
15
33°
19°
16
33°
23°
17
Hist. Avg.
40°
26°
18
Hist. Avg.
40°
26°
19
Hist. Avg.
39°
25°
20
Hist. Avg.
39°
25°
21
Hist. Avg.
39°
25°
22
Hist. Avg.
39°
25°
23
Hist. Avg.
38°
24°
24
Hist. Avg.
38°
24°
25
Hist. Avg.
38°
24°
26
Hist. Avg.
38°
24°
27
Hist. Avg.
38°
24°
28
Hist. Avg.
38°
24°
29
Hist. Avg.
37°
23°
30
Hist. Avg.
37°
23°
31
Hist. Avg.
37°
23°
1
Hist. Avg.
37°
23°
2
Hist. Avg.
37°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Saint Thomas
Saint Thomas's December 2026 forecast shows daily high temperatures ranging from 33° to 55°, with overnight lows between 19° and 34°. The average high for December is 40° with an average low of 26°. 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 Saint Thomas. See also: January | February | March.
