S
M
T
W
T
F
S
29
68°
47°
30
67°
40°
1
61°
34°
2
53°
33°
3
54°
35°
4
58°
44°
5
58°
38°
6
54°
34°
7
54°
32°
8
52°
31°
9
51°
31°
10
52°
32°
11
55°
32°
12
57°
37°
13
59°
40°
14
56°
34°
15
54°
33°
16
51°
36°
17
54°
33°
18
51°
29°
19
50°
28°
20
51°
30°
21
53°
31°
22
57°
30°
23
51°
29°
24
48°
28°
25
49°
28°
26
48°
30°
27
50°
30°
28
52°
31°
29
51°
29°
30
50°
31°
31
51°
28°
1
50°
28°
2
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Athens
Athens's December 2026 forecast shows daily high temperatures ranging from 48° to 68°, with overnight lows between 28° and 47°. The average high for December is 54° with an average low of 33°. 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 Athens. See also: January | February | March.