5-day weather forecast for Blue Island, Illinois

Weather changeability for Chicago, Illinois

Temperature Last Month Last Year
Average change in high temperature day-to-day 6.2° 6.4°
Average change in low temperature day-to-day 4.7° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 60% 58%
Chance of precip day after a dry day 26% 27%

Weather forecast accuracy for Chicago, Illinois

Last Month
AccuWeather   75.57%
MeteoGroup   75.57%
Weather Underground   74.11%
The Weather Channel   73.56%
Foreca   70.40%
NWS Digital Forecast   67.53%
Dark Sky (forecast.io)   67.53%
World Weather Online   63.52%
Persistence   47.70%
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

On average, World Weather Online's high temperature forecasts for Chicago were off by 3.50 degrees last month.