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 4.2° 6.4°
Average change in low temperature day-to-day 3.3° 7.3°
Precipitation Last Month Last Year
Chance of dry day after a precip day 60% 59%
Chance of precip day after a dry day 37% 26%
 
 

Weather forecast accuracy for Chicago, Illinois

Last Month
Foreca   78.47%
The Weather Channel   71.94%
Weather Underground   71.26%
MeteoGroup   70.83%
National Weather Service   66.69%
AccuWeather   64.44%
CustomWeather   63.61%
WeatherBug   61.78%
Dark Sky (forecast.io)   60.28%
Persistence   50.57%
Last Year
MeteoGroup   74.95%
The Weather Channel   74.81%
National Weather Service   71.21%
Foreca   71.12%
Weather Underground   70.14%
AccuWeather   69.66%
CustomWeather   68.85%
WeatherBug   66.81%
Persistence   42.64%
 

ForecastAdvisor Fact

79.8% of Foreca's low temperature forecasts for Chicago were within 3 degrees of actual temperatures last month.