S
M
T
W
T
F
S
31
88°
70°
1
89°
69°
2
90°
68°
3
85°
69°
4
85°
70°
5
88°
70°
6
89°
69°
7
90°
69°
8
90°
70°
9
89°
70°
10
90°
72°
11
89°
72°
12
86°
70°
13
87°
70°
14
88°
72°
15
90°
73°
16
91°
72°
17
91°
72°
18
90°
71°
19
88°
70°
20
90°
70°
21
89°
71°
22
88°
72°
23
89°
73°
24
87°
72°
25
87°
71°
26
88°
71°
27
88°
72°
28
89°
71°
29
89°
71°
30
90°
72°
1
89°
72°
2
89°
73°
3
90°
72°
4
90°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Augustine
St. Augustine'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 89° 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. See also: July | August | September.