5-day weather forecast for Posen, Illinois

Weather changeability for Chicago, Illinois

Temperature Last Month Last Year
Average change in high temperature day-to-day 9.3° 6.5°
Average change in low temperature day-to-day 10.1° 7.7°
Precipitation Last Month Last Year
Chance of dry day after a precip day 40% 49%
Chance of precip day after a dry day 44% 26%
 
 

Weather forecast accuracy for Chicago, Illinois

Last Month
AccuWeather   70.16%
Weather Underground   68.82%
Dark Sky (forecast.io)   68.55%
NWS Digital Forecast   68.18%
The Weather Channel   66.67%
MeteoGroup   66.40%
Foreca   61.83%
Persistence   36.29%
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

8.6% of Foreca's low temperature forecasts for Chicago were off by more than 10 degrees last month.