McKinney, Texas Weather:
Friday, August 21, 2026
Sunny Weather
Day 104°
Night 75°
Precipitation 6 %
Wind 6 mph
UV Index (0 - 11+) 10
Weather Forecast History
Last Year's Weather on This Day (August 21, 2025)
Stormy Weather

Day

99°

Night

72°

Wind

4 mph

Precipitation

55 %