S
M
T
W
T
F
S
29
46°
36°
30
49°
35°
1
48°
34°
2
48°
33°
3
41°
34°
4
45°
33°
5
46°
33°
6
43°
32°
7
37°
28°
8
34°
23°
9
32°
24°
10
36°
27°
11
39°
32°
12
40°
29°
13
39°
29°
14
33°
22°
15
34°
25°
16
36°
29°
17
39°
28°
18
37°
25°
19
36°
20°
20
33°
17°
21
29°
16°
22
29°
23°
23
33°
26°
24
33°
25°
25
34°
15°
26
32°
10°
27
28°
11°
28
27°
11°
29
27°
13°
30
28°
22°
31
30°
17°
1
32°
12°
2
28°
9°
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 27° to 49°, with overnight lows between 9° and 36°. The average high for December is 36° with an average low of 24°. 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.