Rialto, California Weather:
Saturday, September 5, 2026
Cloudy Weather
Day 97°
Night 66°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (September 5, 2025)
Night

Day

97°

Night

66°

Wind

4 mph

Precipitation

0 %