S
M
T
W
T
F
S
28
93°
71°
29
93°
74°
30
92°
73°
1
93°
69°
2
90°
73°
3
91°
72°
4
92°
73°
5
91°
72°
6
93°
72°
7
91°
74°
8
94°
72°
9
94°
69°
10
89°
69°
11
90°
70°
12
89°
72°
13
93°
75°
14
92°
74°
15
92°
75°
16
94°
75°
17
95°
74°
18
95°
75°
19
94°
74°
20
94°
73°
21
90°
71°
22
90°
72°
23
91°
74°
24
94°
75°
25
95°
75°
26
95°
73°
27
94°
69°
28
91°
69°
29
90°
73°
30
94°
74°
31
95°
75°
1
94°
74°
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 89° to 95°, with overnight lows between 69° and 75°. The average high for July is 92° with an average low of 73°. 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.