S
M
T
W
T
F
S
26
85°
64°
27
83°
64°
28
82°
61°
29
83°
66°
30
84°
65°
1
84°
65°
2
83°
64°
3
83°
61°
4
79°
63°
5
80°
64°
6
79°
63°
7
79°
64°
8
82°
66°
9
85°
67°
10
86°
67°
11
86°
66°
12
85°
65°
13
82°
62°
14
81°
64°
15
86°
67°
16
85°
68°
17
86°
69°
18
86°
69°
19
82°
68°
20
83°
69°
21
84°
69°
22
87°
70°
23
87°
70°
24
86°
71°
25
87°
71°
26
86°
70°
27
87°
71°
28
87°
70°
29
87°
68°
30
88°
67°
31
89°
68°
1
88°
69°
2
89°
68°
3
85°
69°
4
85°
69°
5
88°
70°
6
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Augustine Shores
St. Augustine Shores's May 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 61° and 71°. The average high for May is 85° with an average low of 67°. 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 St. Augustine Shores. See also: June | July | August.