Richardson, Texas Weather:
Sunday, September 20, 2026
Sunny with a Chance of Thunderstorms
Day 99°
Night 77°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 7
Weather Forecast History
Last Year's Weather on This Day (September 20, 2025)
Cloudy Night

Day

93°

Night

75°

Wind

8 mph

Precipitation

8 %