Rancho Cucamonga, California Weather:
Saturday, May 23, 2026
Sunny Weather
Day 82°
Night 59°
Precipitation 0 %
Wind 8 mph
Weather Forecast History
Last Year's Weather on This Day (May 23, 2025)
Cloudy Weather

Day

81°

Night

57°

Wind

9 mph

UV Index

11

Precipitation

25 %