S
M
T
W
T
F
S
30
89°
78°
31
87°
78°
1
88°
77°
2
86°
78°
3
87°
78°
4
88°
77°
5
87°
78°
6
88°
77°
7
89°
78°
8
88°
77°
9
88°
78°
10
87°
77°
11
87°
78°
12
88°
78°
13
88°
77°
14
87°
79°
15
88°
78°
16
88°
78°
17
87°
77°
18
86°
77°
19
86°
76°
20
87°
78°
21
85°
77°
22
86°
77°
23
87°
76°
24
88°
77°
25
86°
76°
26
85°
75°
27
86°
75°
28
87°
74°
29
88°
76°
30
88°
76°
1
Hist. Avg.
88°
76°
2
Hist. Avg.
88°
76°
3
Hist. Avg.
88°
76°
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 85° to 89°, with overnight lows between 74° and 79°. The average high for September is 87° with an average low of 77°. 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.
