S
M
T
W
T
F
S
29
43°
30°
30
45°
29°
1
44°
24°
2
37°
22°
3
34°
24°
4
36°
28°
5
38°
31°
6
41°
30°
7
42°
27°
8
42°
25°
9
39°
25°
10
30°
23°
11
32°
26°
12
35°
27°
13
40°
25°
14
38°
25°
15
37°
26°
16
36°
23°
17
42°
22°
18
36°
20°
19
29°
18°
20
31°
10°
21
29°
9°
22
21°
11°
23
19°
10°
24
21°
14°
25
22°
18°
26
25°
20°
27
28°
10°
28
30°
13°
29
23°
23°
30
30°
23°
31
32°
22°
1
33°
22°
2
32°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in St. Jacobs
St. Jacobs's December 2026 forecast shows daily high temperatures ranging from 19° to 45°, with overnight lows between 9° and 31°. The average high for December is 33° with an average low of 22°. 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. Jacobs. See also: January | February | March.
