S
M
T
W
T
F
S
31
71°
61°
1
69°
62°
2
70°
61°
3
70°
62°
4
70°
62°
5
69°
64°
6
70°
63°
7
71°
64°
8
72°
63°
9
73°
63°
10
73°
65°
11
74°
65°
12
79°
65°
13
74°
67°
14
74°
66°
15
73°
67°
16
77°
63°
17
73°
63°
18
74°
62°
19
75°
61°
20
72°
62°
21
70°
63°
22
71°
62°
23
73°
63°
24
74°
64°
25
75°
65°
26
76°
66°
27
75°
64°
28
74°
65°
29
73°
63°
30
76°
66°
1
76°
65°
2
74°
65°
3
76°
66°
4
77°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in National City
National City's June 2026 forecast shows daily high temperatures ranging from 70° to 77°, with overnight lows between 61° and 67°. The average high for June is 74° with an average low of 64°. 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 National City. See also: July | August | September.