S
M
T
W
T
F
S
30
86°
56°
31
77°
54°
1
77°
55°
2
78°
61°
3
76°
55°
4
78°
63°
5
82°
62°
6
83°
55°
7
80°
54°
8
75°
53°
9
75°
52°
10
74°
60°
11
77°
53°
12
76°
53°
13
74°
52°
14
73°
59°
15
77°
60°
16
79°
50°
17
80°
49°
18
70°
49°
19
69°
50°
20
70°
51°
21
69°
50°
22
67°
49°
23
67°
53°
24
69°
55°
25
69°
54°
26
75°
55°
27
74°
50°
28
75°
46°
29
67°
46°
30
67°
53°
1
66°
55°
2
69°
52°
3
72°
49°
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 66° to 86°, with overnight lows between 46° and 63°. The average high for September is 74° with an average low of 54°. 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.
