S
M
T
W
T
F
S
26
80°
68°
27
74°
67°
28
79°
65°
29
87°
69°
30
81°
66°
1
79°
63°
2
75°
64°
3
76°
63°
4
77°
62°
5
79°
64°
6
82°
66°
7
82°
67°
8
81°
65°
9
82°
66°
10
81°
64°
11
83°
66°
12
82°
68°
13
84°
67°
14
86°
68°
15
85°
68°
16
82°
63°
17
81°
63°
18
81°
64°
19
82°
65°
20
84°
66°
21
85°
67°
22
85°
67°
23
86°
69°
24
84°
70°
25
83°
69°
26
86°
70°
27
88°
71°
28
85°
71°
29
83°
70°
30
82°
71°
31
82°
71°
1
84°
72°
2
84°
72°
3
83°
71°
4
84°
72°
5
84°
72°
6
85°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Augustine
St. Augustine's May 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 62° and 72°. The average high for May is 82° 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. See also: June | July | August.
