S
M
T
W
T
F
S
29
52°
37°
30
58°
37°
1
55°
38°
2
57°
33°
3
44°
31°
4
52°
29°
5
56°
36°
6
55°
33°
7
43°
28°
8
42°
22°
9
42°
22°
10
41°
22°
11
40°
25°
12
41°
23°
13
42°
22°
14
42°
21°
15
42°
27°
16
43°
30°
17
44°
32°
18
49°
28°
19
48°
21°
20
43°
21°
21
41°
20°
22
39°
22°
23
42°
26°
24
42°
22°
25
41°
21°
26
39°
18°
27
39°
21°
28
38°
19°
29
39°
22°
30
41°
26°
31
46°
21°
1
46°
18°
2
39°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Emlyn
Emlyn's December 2026 forecast shows daily high temperatures ranging from 38° to 58°, with overnight lows between 15° and 38°. The average high for December is 45° with an average low of 25°. 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 Emlyn. See also: January | February | March.