S
M
T
W
T
F
S
31
87°
74°
1
87°
74°
2
90°
74°
3
80°
74°
4
84°
73°
5
84°
67°
6
84°
68°
7
83°
68°
8
86°
69°
9
86°
75°
10
85°
77°
11
87°
73°
12
91°
74°
13
94°
77°
14
94°
73°
15
95°
76°
16
91°
75°
17
94°
74°
18
94°
76°
19
91°
72°
20
91°
71°
21
89°
72°
22
95°
73°
23
95°
75°
24
88°
77°
25
89°
74°
26
90°
76°
27
92°
77°
28
93°
76°
29
91°
77°
30
86°
78°
1
89°
74°
2
90°
73°
3
90°
75°
4
92°
76°
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 86° to 93°, with overnight lows between 73° and 78°. The average high for June is 90° with an average low of 76°. 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.