S
M
T
W
T
F
S
31
89°
68°
1
88°
69°
2
89°
68°
3
85°
69°
4
85°
69°
5
88°
70°
6
89°
68°
7
90°
68°
8
90°
70°
9
89°
70°
10
90°
72°
11
88°
71°
12
86°
69°
13
87°
69°
14
88°
71°
15
90°
73°
16
91°
72°
17
91°
72°
18
90°
71°
19
88°
70°
20
88°
71°
21
89°
70°
22
88°
72°
23
87°
73°
24
87°
72°
25
88°
71°
26
87°
71°
27
88°
72°
28
88°
71°
29
89°
71°
30
88°
72°
1
88°
71°
2
89°
71°
3
89°
72°
4
90°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Augustine South
St. Augustine South's June 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 68° and 73°. The average high for June is 88° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in St. Augustine South. See also: July | August | September.