S
M
T
W
T
F
S
30
89°
81°
31
88°
80°
1
89°
80°
2
88°
80°
3
87°
79°
4
88°
80°
5
87°
79°
6
88°
78°
7
88°
79°
8
87°
79°
9
89°
77°
10
88°
78°
11
86°
78°
12
85°
79°
13
85°
80°
14
86°
79°
15
85°
78°
16
85°
79°
17
86°
80°
18
87°
80°
19
87°
79°
20
88°
80°
21
88°
79°
22
86°
79°
23
85°
78°
24
84°
79°
25
84°
79°
26
85°
78°
27
84°
79°
28
84°
79°
29
85°
78°
30
85°
79°
1
84°
78°
2
84°
79°
3
85°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Miami
Miami's September 2026 forecast shows daily high temperatures ranging from 84° to 89°, with overnight lows between 77° and 81°. The average high for September is 86° with an average low of 79°. 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 Miami. See also: October | November | December.
