S
M
T
W
T
F
S
26
69°
43°
27
59°
50°
28
61°
47°
29
64°
49°
30
68°
51°
31
73°
46°
1
76°
50°
2
74°
52°
3
71°
61°
4
76°
56°
5
75°
52°
6
76°
54°
7
70°
54°
8
63°
48°
9
70°
56°
10
71°
52°
11
74°
53°
12
78°
54°
13
78°
48°
14
78°
47°
15
75°
48°
16
73°
47°
17
70°
49°
18
65°
45°
19
62°
44°
20
60°
43°
21
61°
38°
22
54°
37°
23
54°
36°
24
54°
35°
25
53°
34°
26
53°
33°
27
55°
33°
28
61°
35°
29
62°
39°
30
62°
39°
31
63°
38°
1
62°
38°
2
60°
40°
3
61°
38°
4
60°
35°
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 53° to 78°, with overnight lows between 33° and 56°. The average high for August is 64° with an average low of 42°. 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.
