S
M
T
W
T
F
S
28
75°
64°
29
76°
66°
30
76°
66°
1
77°
67°
2
77°
67°
3
76°
66°
4
78°
67°
5
77°
66°
6
77°
65°
7
76°
65°
8
74°
66°
9
76°
65°
10
75°
64°
11
74°
64°
12
73°
62°
13
72°
63°
14
72°
60°
15
73°
61°
16
71°
61°
17
71°
63°
18
73°
65°
19
77°
66°
20
78°
68°
21
78°
70°
22
77°
69°
23
76°
66°
24
76°
65°
25
75°
67°
26
76°
68°
27
75°
68°
28
78°
67°
29
77°
69°
30
78°
68°
31
78°
68°
1
79°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in National City
National City's July 2026 forecast shows daily high temperatures ranging from 71° to 79°, with overnight lows between 60° and 70°. The average high for July is 76° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in National City. See also: August | September | October.
