S
M
T
W
T
F
S
26
63°
42°
27
64°
42°
28
63°
41°
29
63°
46°
30
62°
42°
31
61°
41°
1
61°
40°
2
62°
45°
3
62°
45°
4
63°
46°
5
65°
40°
6
61°
38°
7
65°
43°
8
61°
44°
9
61°
41°
10
64°
45°
11
68°
42°
12
70°
43°
13
69°
41°
14
67°
44°
15
69°
37°
16
63°
36°
17
60°
38°
18
66°
38°
19
65°
35°
20
58°
41°
21
58°
41°
22
62°
35°
23
59°
34°
24
55°
34°
25
54°
35°
26
54°
34°
27
55°
34°
28
55°
36°
29
58°
40°
30
61°
33°
31
56°
35°
1
55°
33°
2
57°
39°
3
60°
40°
4
63°
37°
5
59°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Richardson
Richardson's August 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 33° and 46°. The average high for August is 61° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Richardson. See also: September | October | November.
