Rialto, California Weather:
Sunday, May 17, 2026
Cloudy Weather
Day 81°
Night 55°
Precipitation 40 %
Wind 7 mph
Weather Forecast History
Last Year's Weather on This Day (May 17, 2025)
Cloudy Weather

Day

64°

Night

55°

Wind

9 mph

UV Index

4

Precipitation

25 %