S
M
T
W
T
F
S
29
54°
46°
30
61°
46°
1
60°
45°
2
58°
39°
3
49°
35°
4
53°
38°
5
57°
45°
6
54°
40°
7
48°
37°
8
47°
31°
9
47°
33°
10
48°
33°
11
46°
32°
12
47°
33°
13
49°
30°
14
49°
31°
15
49°
39°
16
50°
40°
17
49°
38°
18
55°
34°
19
52°
30°
20
48°
28°
21
45°
29°
22
47°
31°
23
50°
32°
24
46°
30°
25
46°
29°
26
45°
28°
27
46°
28°
28
45°
29°
29
46°
32°
30
48°
31°
31
49°
29°
1
45°
25°
2
44°
24°
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 44° to 61°, with overnight lows between 24° and 46°. The average high for December is 49° with an average low of 34°. 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.