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
70°
61°
9
77°
49°
10
73°
50°
11
77°
59°
12
75°
47°
13
64°
51°
14
62°
50°
15
65°
46°
16
64°
45°
17
64°
46°
18
62°
43°
19
64°
44°
20
62°
42°
21
67°
45°
22
67°
50°
23
70°
51°
24
71°
51°
25
71°
50°
26
69°
50°
27
69°
51°
28
70°
51°
29
67°
50°
30
68°
50°
1
66°
44°
2
57°
41°
3
56°
37°
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 56° to 77°, with overnight lows between 37° and 61°. 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.
