Round Rock, Texas Weather:
Saturday, September 5, 2026
Sunny with a Chance of Thunderstorms
Day 99°
Night 73°
Precipitation 62 %
Wind 9 mph
UV Index (0 - 11+) 9
Weather Forecast History
Last Year's Weather on This Day (September 5, 2025)
Cloudy Night

Day

100°

Night

79°

Wind

8 mph

Precipitation

49 %