S
M
T
W
T
F
S
30
84°
62°
31
84°
63°
1
83°
63°
2
84°
62°
3
83°
59°
4
75°
60°
5
80°
60°
6
77°
59°
7
76°
53°
8
78°
58°
9
81°
59°
10
82°
59°
11
81°
53°
12
81°
57°
13
80°
59°
14
82°
58°
15
79°
57°
16
80°
57°
17
81°
58°
18
82°
58°
19
81°
57°
20
79°
52°
21
78°
47°
22
71°
50°
23
75°
55°
24
78°
56°
25
80°
55°
26
79°
51°
27
76°
50°
28
68°
49°
29
69°
51°
30
66°
45°
1
67°
52°
2
70°
53°
3
75°
52°
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 84°, with overnight lows between 45° and 63°. The average high for September is 78° with an average low of 56°. 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.
