S
M
T
W
T
F
S
31
67°
53°
1
66°
54°
2
68°
53°
3
69°
59°
4
75°
61°
5
75°
61°
6
69°
60°
7
70°
55°
8
76°
59°
9
69°
56°
10
75°
56°
11
76°
63°
12
74°
63°
13
79°
57°
14
72°
56°
15
72°
55°
16
73°
59°
17
73°
62°
18
72°
58°
19
74°
58°
20
74°
59°
21
78°
62°
22
77°
65°
23
75°
64°
24
77°
62°
25
76°
61°
26
80°
61°
27
79°
63°
28
80°
64°
29
80°
63°
30
76°
62°
1
80°
67°
2
81°
60°
3
79°
60°
4
77°
62°
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 66° to 81°, with overnight lows between 53° and 67°. The average high for June is 75° with an average low of 60°. 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.