5-day weather forecast for Ontario, California

Click on a forecast to see the forecast trend for that day

Weather changeability for Ontario, California

Unfortunately, there was not enough data for this station to provide meaningful weather changeability data.

Weather forecast accuracy for Ontario, California

Last Month
Last Year
The Weather Channel   88.93%
Weather Underground   88.59%
MeteoGroup   86.96%
Foreca   85.76%
AccuWeather   85.36%
NWS Digital Forecast   82.29%
Dark Sky (forecast.io)   78.31%
World Weather Online   73.02%
Persistence   66.38%

ForecastAdvisor Fact

0.5% of Weather Underground's high temperature forecasts for Ontario were off by more than 10 degrees last year.