S
M
T
W
T
F
S
28
62°
51°
29
61°
46°
30
58°
45°
1
67°
50°
2
62°
45°
3
62°
44°
4
66°
46°
5
70°
47°
6
70°
47°
7
68°
46°
8
67°
47°
9
68°
47°
10
70°
46°
11
66°
46°
12
68°
47°
13
65°
42°
14
66°
43°
15
72°
46°
16
69°
45°
17
65°
44°
18
65°
45°
19
66°
46°
20
67°
44°
21
63°
43°
22
63°
42°
23
64°
44°
24
63°
43°
25
62°
41°
26
61°
40°
27
60°
40°
28
61°
41°
29
61°
41°
30
62°
42°
31
62°
40°
1
60°
39°
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 58° to 72°, with overnight lows between 39° and 51°. The average high for July is 65° 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.