S
M
T
W
T
F
S
30
90°
75°
31
90°
78°
1
89°
78°
2
91°
75°
3
91°
77°
4
92°
79°
5
93°
75°
6
93°
77°
7
91°
72°
8
91°
74°
9
89°
78°
10
91°
79°
11
87°
80°
12
92°
75°
13
92°
75°
14
91°
75°
15
92°
77°
16
90°
76°
17
89°
76°
18
88°
74°
19
91°
75°
20
90°
75°
21
88°
76°
22
89°
75°
23
90°
77°
24
89°
76°
25
90°
75°
26
88°
76°
27
89°
76°
28
90°
77°
29
88°
77°
30
89°
76°
1
86°
77°
2
88°
78°
3
89°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deerfield Beach
Deerfield Beach's September 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 74° and 78°. The average high for September is 89° with an average low of 76°. 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 Deerfield Beach. See also: October | November | December.
