S
M
T
W
T
F
S
30
73°
59°
31
82°
62°
1
83°
53°
2
81°
58°
3
77°
62°
4
86°
68°
5
77°
63°
6
78°
57°
7
78°
58°
8
75°
60°
9
80°
55°
10
75°
50°
11
79°
60°
12
75°
45°
13
63°
42°
14
61°
58°
15
67°
43°
16
68°
47°
17
66°
45°
18
64°
46°
19
63°
44°
20
64°
41°
21
64°
47°
22
63°
45°
23
66°
44°
24
71°
51°
25
67°
51°
26
70°
51°
27
70°
50°
28
69°
50°
29
66°
49°
30
66°
47°
1
60°
46°
2
59°
44°
3
64°
46°
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 59° to 79°, with overnight lows between 41° and 60°. The average high for September is 67° with an average low of 48°. 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.
