S
M
T
W
T
F
S
31
82°
73°
1
83°
73°
2
84°
72°
3
84°
73°
4
84°
73°
5
84°
72°
6
84°
74°
7
83°
74°
8
84°
73°
9
85°
74°
10
85°
74°
11
86°
73°
12
85°
75°
13
85°
75°
14
87°
74°
15
89°
73°
16
88°
72°
17
87°
72°
18
88°
73°
19
87°
74°
20
89°
73°
21
91°
74°
22
90°
74°
23
88°
73°
24
90°
74°
25
90°
75°
26
89°
75°
27
90°
74°
28
89°
74°
29
90°
73°
30
90°
73°
1
88°
74°
2
89°
72°
3
88°
73°
4
90°
73°
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 82° to 91°, with overnight lows between 72° and 75°. The average high for June is 87° with an average low of 73°. 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.