S
M
T
W
T
F
S
29
62°
47°
30
65°
44°
1
69°
45°
2
68°
43°
3
63°
36°
4
60°
31°
5
54°
29°
6
49°
27°
7
50°
29°
8
51°
30°
9
49°
29°
10
49°
28°
11
46°
27°
12
47°
31°
13
49°
28°
14
49°
26°
15
46°
26°
16
47°
27°
17
48°
27°
18
49°
34°
19
54°
39°
20
58°
40°
21
62°
42°
22
61°
44°
23
62°
45°
24
63°
43°
25
65°
42°
26
64°
41°
27
61°
40°
28
56°
43°
29
61°
45°
30
64°
42°
31
64°
37°
1
63°
33°
2
57°
36°
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 46° to 69°, with overnight lows between 26° and 47°. The average high for December is 57° with an average low of 36°. 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.