S
M
T
W
T
F
S
31
77°
48°
1
72°
51°
2
79°
50°
3
83°
61°
4
82°
63°
5
85°
68°
6
83°
68°
7
85°
65°
8
71°
57°
9
74°
57°
10
78°
60°
11
80°
63°
12
81°
65°
13
82°
66°
14
80°
63°
15
75°
62°
16
77°
62°
17
76°
61°
18
73°
64°
19
79°
65°
20
78°
61°
21
79°
59°
22
74°
59°
23
74°
60°
24
75°
63°
25
78°
67°
26
82°
67°
27
82°
61°
28
76°
61°
29
78°
62°
30
75°
61°
1
76°
63°
2
77°
62°
3
82°
66°
4
83°
68°
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 71° to 85°, with overnight lows between 57° and 68°. The average high for June is 78° with an average low of 63°. 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.