S
M
T
W
T
F
S
26
87°
70°
27
85°
69°
28
84°
74°
29
84°
68°
30
87°
71°
1
89°
75°
2
91°
75°
3
80°
72°
4
81°
73°
5
85°
74°
6
87°
73°
7
90°
75°
8
87°
74°
9
89°
75°
10
88°
74°
11
88°
75°
12
87°
74°
13
88°
72°
14
85°
74°
15
84°
75°
16
84°
75°
17
85°
74°
18
85°
75°
19
86°
75°
20
85°
74°
21
85°
75°
22
86°
76°
23
85°
76°
24
86°
75°
25
85°
76°
26
85°
75°
27
87°
76°
28
86°
77°
29
87°
76°
30
88°
75°
31
85°
76°
1
83°
76°
2
83°
75°
3
85°
77°
4
86°
77°
5
86°
76°
6
87°
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 80° to 91°, with overnight lows between 71° and 77°. The average high for May is 86° 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 Boca Raton. See also: June | July | August.