S
M
T
W
T
F
S
30
89°
78°
31
88°
80°
1
89°
80°
2
87°
79°
3
87°
79°
4
88°
78°
5
85°
78°
6
85°
79°
7
86°
78°
8
86°
79°
9
85°
80°
10
86°
80°
11
85°
79°
12
86°
79°
13
85°
78°
14
85°
78°
15
86°
77°
16
85°
78°
17
85°
78°
18
86°
77°
19
85°
78°
20
85°
78°
21
84°
77°
22
84°
76°
23
85°
76°
24
84°
78°
25
85°
78°
26
84°
79°
27
84°
78°
28
87°
76°
29
88°
76°
30
88°
77°
1
87°
76°
2
88°
77°
3
87°
75°
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 75° and 80°. The average high for September is 86° with an average low of 78°. 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.
