S
M
T
W
T
F
S
26
87°
70°
27
85°
69°
28
84°
74°
29
84°
68°
30
89°
72°
1
87°
70°
2
96°
71°
3
80°
72°
4
79°
72°
5
82°
73°
6
84°
75°
7
88°
68°
8
89°
73°
9
91°
76°
10
91°
75°
11
88°
77°
12
91°
73°
13
90°
73°
14
91°
73°
15
89°
74°
16
86°
70°
17
86°
81°
18
86°
79°
19
87°
79°
20
87°
79°
21
86°
79°
22
88°
80°
23
90°
79°
24
90°
80°
25
89°
79°
26
89°
79°
27
88°
78°
28
86°
75°
29
88°
76°
30
87°
75°
31
87°
75°
1
90°
77°
2
88°
75°
3
88°
77°
4
87°
76°
5
85°
77°
6
85°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Deerfield Beach
Deerfield Beach's May 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 75° and 80°. The average high for May is 88° 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 May weather will actually feel in Deerfield Beach. See also: June | July | August.