S
M
T
W
T
F
S
28
67°
43°
29
66°
42°
30
67°
43°
1
71°
45°
2
74°
51°
3
76°
44°
4
72°
48°
5
74°
45°
6
73°
44°
7
66°
45°
8
66°
40°
9
71°
46°
10
70°
46°
11
70°
45°
12
71°
49°
13
74°
49°
14
71°
46°
15
72°
46°
16
74°
47°
17
75°
50°
18
74°
49°
19
74°
48°
20
73°
46°
21
72°
45°
22
66°
42°
23
69°
44°
24
Hist. Avg.
68°
51°
25
Hist. Avg.
68°
51°
26
Hist. Avg.
68°
51°
27
Hist. Avg.
68°
50°
28
Hist. Avg.
68°
50°
29
Hist. Avg.
68°
50°
30
Hist. Avg.
67°
50°
31
Hist. Avg.
67°
50°
1
Hist. Avg.
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Richardson
Richardson's July 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 40° and 51°. The average high for July is 71° with an average low of 46°. 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.