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 7.0° 6.4°
Average change in low temperature day-to-day 8.6° 7.3°
Precipitation Last Month Last Year
Chance of dry day after a precip day 42% 59%
Chance of precip day after a dry day 32% 26%

Weather forecast accuracy for Chicago, Illinois

Last Month
The Weather Channel   77.15%
Foreca   76.88%
MeteoGroup   76.08%
Weather Underground   75.81%
National Weather Service   71.51%
AccuWeather   69.62%
Dark Sky (forecast.io)   68.28%
CustomWeather   67.20%
WeatherBug   66.94%
Persistence   38.44%
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

It rained or snowed 34% of the time in Chicago last year when Persistence's text forecasts called for precipitation, and 29% of the time when they did not.