S
M
T
W
T
F
S
31
61°
45°
1
66°
48°
2
65°
46°
3
59°
45°
4
60°
49°
5
59°
42°
6
60°
49°
7
66°
50°
8
68°
49°
9
68°
48°
10
60°
46°
11
58°
45°
12
60°
46°
13
63°
43°
14
61°
42°
15
61°
45°
16
62°
51°
17
68°
54°
18
69°
50°
19
71°
51°
20
66°
47°
21
61°
47°
22
66°
45°
23
66°
51°
24
68°
52°
25
70°
53°
26
70°
52°
27
68°
53°
28
69°
50°
29
65°
44°
30
64°
48°
1
66°
52°
2
68°
50°
3
64°
50°
4
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Oceanside
Oceanside's June 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 42° and 54°. The average high for June is 65° with an average low of 48°. 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 Oceanside. See also: July | August | September.