5-day weather forecast for Posen, Illinois

Weather changeability for Chicago, Illinois

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

Weather forecast accuracy for Chicago, Illinois

Last Month
Foreca   78.61%
Weather Underground   78.33%
The Weather Channel   77.78%
AccuWeather   77.78%
MeteoGroup   76.11%
NWS Digital Forecast   72.70%
Dark Sky (forecast.io)   68.61%
Persistence   60.42%
Last Year
The Weather Channel   75.03%
Weather Underground   74.58%
Foreca   72.97%
MeteoGroup   72.94%
CustomWeather   68.59%
NWS Digital Forecast   68.10%
AccuWeather   68.05%
WeatherBug   63.98%
Persistence   42.33%

ForecastAdvisor Fact

3.9% of Persistence's low temperature forecasts for Chicago were exactly right last year.