Rancho Cucamonga, California Weather:
Tuesday, May 19, 2026
Cloudy Weather
Day 77°
Night 54°
Precipitation 0 %
Wind 7 mph
Weather Forecast History
Last Year's Weather on This Day (May 19, 2025)
Sunny Weather

Day

88°

Night

61°

Wind

7 mph

UV Index

11

Precipitation

1 %