S
M
T
W
T
F
S
28
55°
46°
29
61°
44°
30
60°
38°
1
64°
41°
2
68°
45°
3
67°
47°
4
66°
46°
5
68°
47°
6
67°
46°
7
68°
47°
8
70°
46°
9
63°
44°
10
65°
46°
11
66°
46°
12
68°
47°
13
71°
48°
14
70°
45°
15
66°
44°
16
69°
46°
17
69°
45°
18
65°
44°
19
66°
46°
20
65°
44°
21
64°
44°
22
63°
43°
23
62°
42°
24
64°
42°
25
63°
43°
26
63°
42°
27
64°
42°
28
63°
41°
29
63°
46°
30
62°
42°
31
61°
41°
1
61°
40°
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 55° to 71°, with overnight lows between 38° and 48°. 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.