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 6.1° 6.4°
Average change in low temperature day-to-day 6.3° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 33% 58%
Chance of precip day after a dry day 20% 27%

Weather forecast accuracy for Chicago, Illinois

Last Month
The Weather Channel   82.44%
Weather Underground   81.25%
MeteoGroup   81.25%
NWS Digital Forecast   79.82%
Foreca   79.46%
AccuWeather   77.68%
Dark Sky (forecast.io)   72.62%
World Weather Online   63.39%
Persistence   42.28%
Last Year
Weather Underground   77.28%
The Weather Channel   77.19%
MeteoGroup   75.73%
AccuWeather   74.83%
Foreca   74.80%
NWS Digital Forecast   71.54%
Dark Sky (forecast.io)   67.00%
World Weather Online   62.65%
Persistence   43.42%

ForecastAdvisor Fact

1.3% of AccuWeather's low temperature forecasts for Chicago were off by more than 10 degrees last year.