Rancho Cucamonga, California Weather:
Saturday, May 16, 2026
Cloudy Weather
Day 79°
Night 55°
Precipitation 10 %
Wind 7 mph
Weather Forecast History
Last Year's Weather on This Day (May 16, 2025)
Cloudy Weather

Day

77°

Night

55°

Wind

7 mph

UV Index

11

Precipitation

1 %