S
M
T
W
T
F
S
28
65°
45°
29
63°
44°
30
64°
43°
1
62°
43°
2
64°
42°
3
64°
43°
4
65°
45°
5
64°
45°
6
65°
44°
7
67°
47°
8
68°
46°
9
65°
43°
10
64°
43°
11
64°
44°
12
65°
43°
13
63°
43°
14
62°
44°
15
63°
43°
16
65°
44°
17
70°
46°
18
68°
46°
19
72°
44°
20
73°
43°
21
65°
44°
22
66°
43°
23
68°
43°
24
70°
47°
25
72°
47°
26
72°
44°
27
70°
46°
28
68°
48°
29
66°
46°
30
66°
44°
31
68°
43°
1
69°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Richardson
Richardson's July 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 42° and 48°. The average high for July is 66° with an average low of 44°. 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 Richardson. See also: August | September | October.