5-day weather forecast for Grafton, Illinois

Weather changeability for Grafton, Illinois

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

Weather forecast accuracy for Grafton, Illinois

Last Month
Last Year
The Weather Channel   75.54%
Weather Underground   75.30%
MeteoGroup   75.24%
Foreca   74.25%
AccuWeather   74.24%
NWS Digital Forecast   71.91%
Dark Sky   71.06%
World Weather Online   55.27%
Persistence   43.60%

ForecastAdvisor Fact

71.2% of AccuWeather's low temperature forecasts for Grafton were within 3 degrees of actual temperatures last year.