Rialto, California Weather:
Monday, May 4, 2026
Cloudy Weather
Day 70°
Night 54°
Precipitation 10 %
Wind 6 mph
UV Index (0 - 11+) 10
Weather Forecast History
Last Year's Weather on This Day (May 4, 2025)
Rainy Weather

Day

57°

Night

52°

Wind

7 mph

UV Index

3

Precipitation

87 %