Chance Rain Showers today in Rancho Cucamonga, CA, with a high near 76 and a low tonight around 60. Chances of rain run around 86% today. Thursday looks showers and thunderstorms, with a high near 67. Over the next 6 days, highs range from 67 to 80 with overnight lows from 54 to 58.

The National Weather Service 7-day forecast for your location, with daily and hourly temperature, chance of precipitation, wind, and conditions.