S
M
T
W
T
F
S
28
61°
56°
29
62°
55°
30
61°
55°
1
66°
56°
2
70°
61°
3
65°
56°
4
60°
50°
5
60°
53°
6
60°
57°
7
60°
55°
8
59°
54°
9
60°
55°
10
59°
51°
11
63°
49°
12
62°
52°
13
63°
50°
14
65°
49°
15
60°
50°
16
56°
54°
17
62°
56°
18
62°
59°
19
61°
61°
20
62°
59°
21
63°
52°
22
69°
50°
23
65°
51°
24
57°
47°
25
N/A
26
63°
42°
27
66°
43°
28
69°
44°
29
66°
38°
30
62°
41°
31
63°
44°
1
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Cardiff South
Cardiff South's July 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 38° and 44°. The average high for July is 65° with an average low of 42°. 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 Cardiff South. See also: August | September | October.
