S
M
T
W
T
F
S
30
91°
70°
31
93°
70°
1
96°
71°
2
97°
73°
3
96°
71°
4
94°
73°
5
96°
71°
6
92°
69°
7
88°
69°
8
89°
70°
9
90°
66°
10
91°
69°
11
92°
66°
12
87°
67°
13
88°
67°
14
88°
68°
15
87°
67°
16
83°
67°
17
80°
66°
18
83°
67°
19
82°
66°
20
79°
62°
21
80°
63°
22
81°
63°
23
81°
62°
24
84°
65°
25
85°
65°
26
77°
64°
27
76°
65°
28
76°
64°
29
77°
63°
30
79°
63°
1
75°
62°
2
75°
62°
3
76°
61°
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 75° to 97°, with overnight lows between 61° and 73°. The average high for September is 85° with an average low of 66°. 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.
