S
M
T
W
T
F
S
26
86°
70°
27
86°
74°
28
84°
71°
29
86°
70°
30
88°
72°
1
86°
74°
2
89°
75°
3
88°
72°
4
83°
69°
5
85°
74°
6
89°
71°
7
88°
73°
8
86°
73°
9
87°
72°
10
83°
70°
11
83°
72°
12
85°
74°
13
84°
74°
14
83°
75°
15
84°
74°
16
83°
70°
17
82°
70°
18
82°
72°
19
83°
71°
20
84°
75°
21
84°
75°
22
85°
74°
23
85°
75°
24
84°
76°
25
84°
76°
26
85°
75°
27
84°
74°
28
86°
75°
29
86°
75°
30
83°
74°
31
85°
76°
1
83°
75°
2
85°
77°
3
85°
77°
4
84°
76°
5
84°
77°
6
85°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boca Raton
Boca Raton's May 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 69° and 77°. The average high for May is 85° with an average low of 74°. 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 Boca Raton. See also: June | July | August.