S
M
T
W
T
F
S
30
72°
56°
31
76°
57°
1
77°
56°
2
78°
48°
3
74°
47°
4
69°
53°
5
69°
55°
6
77°
48°
7
71°
45°
8
68°
45°
9
67°
51°
10
69°
54°
11
70°
53°
12
75°
52°
13
74°
46°
14
66°
44°
15
63°
43°
16
64°
47°
17
65°
44°
18
64°
43°
19
66°
39°
20
61°
41°
21
62°
49°
22
63°
45°
23
70°
41°
24
66°
48°
25
69°
49°
26
65°
49°
27
70°
46°
28
70°
39°
29
67°
43°
30
58°
45°
1
63°
44°
2
66°
46°
3
57°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Athens
Athens's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 35° and 57°. The average high for September is 68° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Athens. See also: October | November | December.
