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Rancho Cucamonga, California Weather:
Saturday, September 20, 2025
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 88°
Night 64°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 7

Weather Forecast History

Last Year's Weather on This Day (September 20, 2024)

Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.

Day

75°

Night

55°

Wind

7 mph

UV Index

3

Precipitation

55