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
89°
80°
23
88°
81°
24
89°
81°
25
88°
77°
26
88°
79°
27
88°
75°
28
87°
73°
29
90°
73°
30
90°
76°
31
89°
77°
1
89°
75°
2
90°
74°
3
85°
76°
4
85°
75°
5
85°
76°
6
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boynton Beach
Boynton Beach's May 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 74° and 77°. The average high for May is 87° with an average low of 75°. 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 Boynton Beach. See also: June | July | August.
