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 4.0° 6.0°
Average change in low temperature day-to-day 6.6° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 42% 60%
Chance of precip day after a dry day 38% 27%

Weather forecast accuracy for Chicago, Illinois

Last Month
Weather Underground   78.45%
The Weather Channel   78.16%
MeteoGroup   77.30%
NWS Digital Forecast   74.11%
Foreca   73.27%
AccuWeather   70.11%
Dark Sky (forecast.io)   69.25%
World Weather Online   64.51%
Persistence   42.26%
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

33.9% of Persistence's high temperature forecasts for Chicago were off by more than 10 degrees last year.