S
M
T
W
T
F
S
30
91°
68°
31
91°
68°
1
93°
68°
2
97°
70°
3
97°
72°
4
97°
73°
5
93°
73°
6
95°
72°
7
90°
70°
8
90°
72°
9
91°
64°
10
93°
68°
11
93°
71°
12
82°
69°
13
87°
68°
14
91°
69°
15
92°
68°
16
91°
70°
17
90°
67°
18
86°
64°
19
81°
59°
20
81°
62°
21
82°
61°
22
81°
60°
23
80°
58°
24
84°
63°
25
83°
61°
26
82°
59°
27
83°
60°
28
83°
60°
29
84°
61°
30
84°
61°
1
82°
59°
2
81°
58°
3
82°
59°
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 80° to 93°, with overnight lows between 58° and 71°. The average high for September is 85° with an average low of 63°. 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.
