Rancho Cucamonga, California Weather:
Wednesday, November 18, 2026
Cloudy Weather
Day 66°
Night 52°
Precipitation 16 %
Wind 1 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (November 18, 2025)
Cloudy Night

Day

57°

Night

43°

Wind

5 mph

Precipitation

25 %