Rancho Cucamonga, California Weather:
Saturday, April 4, 2026
Sunny Weather
Day 73°
Night 46°
Precipitation 0 %
Wind 8 mph
Weather Forecast History
Last Year's Weather on This Day (April 4, 2025)
Cloudy Weather

Day

72°

Night

50°

Wind

7 mph

UV Index

8

Precipitation

25 %