Rancho Cucamonga, California Weather:
Monday, December 28, 2026
Partly Sunny with Showers
Day 64°
Night 39°
Precipitation 0 %
Wind 9 mph
Weather Forecast History
Last Year's Weather on This Day (December 28, 2025)
Night

Day

64°

Night

52°

Wind

9 mph

Precipitation

0 %