S
M
T
W
T
F
S
30
100°
74°
31
99°
72°
1
99°
75°
2
93°
73°
3
88°
73°
4
95°
73°
5
93°
72°
6
96°
73°
7
95°
73°
8
96°
73°
9
95°
73°
10
95°
72°
11
98°
73°
12
96°
72°
13
96°
73°
14
92°
69°
15
92°
69°
16
94°
68°
17
89°
65°
18
88°
67°
19
90°
70°
20
92°
70°
21
92°
69°
22
91°
69°
23
91°
68°
24
90°
69°
25
91°
68°
26
90°
67°
27
83°
60°
28
81°
60°
29
81°
57°
30
85°
61°
1
88°
64°
2
88°
60°
3
79°
56°
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 79° to 98°, with overnight lows between 56° and 73°. The average high for September is 91° with an average low of 68°. 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.
