S
M
T
W
T
F
S
30
88°
67°
31
87°
66°
1
88°
66°
2
87°
67°
3
89°
68°
4
89°
70°
5
90°
66°
6
87°
65°
7
86°
68°
8
86°
68°
9
85°
67°
10
86°
64°
11
88°
66°
12
88°
67°
13
87°
66°
14
88°
66°
15
88°
67°
16
87°
65°
17
87°
65°
18
86°
64°
19
86°
64°
20
85°
62°
21
85°
61°
22
86°
64°
23
86°
63°
24
85°
60°
25
85°
58°
26
83°
58°
27
84°
63°
28
84°
61°
29
82°
58°
30
83°
60°
1
82°
61°
2
83°
60°
3
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Milan
Milan's September 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 58° and 70°. The average high for September is 86° with an average low of 64°. 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 Milan. See also: October | November | December.