Rialto (CA) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in Rialto (California). The numbers are calculated over a 30-year period to provide a reliable average.
- Rialto has dry periods in April, May, June, July, August, September, October and November.
- On average, December is the wettest month with 86 mm of precipitation.
- On average, June is the driest month with 0 mm of precipitation.
- The average amount of annual precipitation is 291 mm.
Current rainfall in Rialto (CA)
broken clouds and chance of rain
partly cloudy and small chance of slight rain
broken clouds and no rain