S
M
T
W
T
F
S
30
96°
70°
31
80°
64°
1
92°
63°
2
92°
69°
3
91°
74°
4
92°
73°
5
94°
71°
6
96°
71°
7
96°
72°
8
100°
73°
9
99°
69°
10
96°
71°
11
99°
76°
12
97°
75°
13
95°
74°
14
94°
73°
15
92°
74°
16
91°
73°
17
96°
75°
18
97°
72°
19
93°
64°
20
90°
66°
21
87°
61°
22
87°
61°
23
89°
62°
24
89°
62°
25
90°
63°
26
94°
67°
27
90°
62°
28
84°
57°
29
84°
59°
30
85°
56°
1
83°
55°
2
84°
57°
3
84°
55°
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 83° to 100°, with overnight lows between 55° and 76°. The average high for September is 91° with an average low of 66°. 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.
