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