Weather Forecast and Radar for Rialto, California

Weather in Rialto, CA

Rialto, California, United States has a temperate climate with warm summers and mild winters. During the summer months, temperatures average in the mid to high 80s Fahrenheit (27-29°C). Daytime highs in July and August can reach the 90s Fahrenheit (32-35°C) with nighttime temperatures in the low 70s (21-23°C).

In the winter, temperatures average in the mid to high 60s Fahrenheit (15-18°C). During the coldest months of December and January, temperatures drop to the low 50s Fahrenheit (10-12°C) with nighttime temperatures in the mid 40s (6-8°C).

Rainfall is fairly consistent throughout the year, with an annual average of around 17 inches (43 cm). October and November are usually the wettest months, while April and May are the driest.

As for snowfall, Rialto is located in a region that rarely sees any snow accumulation. The last time the city saw a significant snowfall was in 2008, when around 1 inch (2.5 cm) of snow was recorded.

Fast Facts About Rialto, CA

As of 2020, the city population is 103549.

Major Cities Nearby Rialto, CA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Rialto, California.