Rialto, California Weather:
Wednesday, May 13, 2026
Sunny Weather
Day 82°
Night 57°
Precipitation 1 %
Wind 7 mph
Weather Forecast History
Last Year's Weather on This Day (May 13, 2025)
Cloudy Weather

Day

66°

Night

52°

Wind

9 mph

UV Index

10

Precipitation

25 %