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 7.6° 6.0°
Average change in low temperature day-to-day 8.6° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 67% 60%
Chance of precip day after a dry day 38% 27%

Weather forecast accuracy for Chicago, Illinois

Last Month
The Weather Channel   77.68%
Foreca   77.68%
Weather Underground   77.38%
AccuWeather   75.89%
MeteoGroup   75.89%
NWS Digital Forecast   69.28%
Dark Sky (forecast.io)   68.45%
World Weather Online   58.04%
Persistence   36.51%
Last Year
MeteoGroup   79.19%
Weather Underground   79.11%
The Weather Channel   78.98%
Foreca   77.30%
AccuWeather   75.88%
Dark Sky (forecast.io)   72.41%
NWS Digital Forecast   71.32%
World Weather Online   63.77%
Persistence   44.10%

ForecastAdvisor Fact

76.2% of AccuWeather's high temperature forecasts for Chicago were within 3 degrees of actual temperatures last month.