S
M
T
W
T
F
S
31
94°
78°
1
91°
76°
2
89°
74°
3
82°
72°
4
84°
75°
5
84°
69°
6
85°
69°
7
86°
70°
8
87°
67°
9
88°
74°
10
86°
73°
11
87°
69°
12
89°
75°
13
90°
72°
14
92°
76°
15
95°
75°
16
93°
74°
17
94°
74°
18
92°
77°
19
95°
74°
20
92°
72°
21
91°
73°
22
91°
70°
23
92°
76°
24
90°
72°
25
91°
71°
26
92°
72°
27
90°
74°
28
90°
73°
29
93°
74°
30
90°
76°
1
88°
76°
2
89°
76°
3
90°
75°
4
91°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Sebastian
Sebastian's June 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 74° and 76°. The average high for June is 90° with an average low of 75°. 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 Sebastian. See also: July | August | September.