Rialto, California Weather:
Wednesday, August 12, 2026
Cloudy Weather
Day 91°
Night 66°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 10
Weather Forecast History
Last Year's Weather on This Day (August 12, 2025)
Night

Day

93°

Night

66°

Wind

5 mph

Precipitation

0 %